Tiger headed toward another win at Torrey

SAN DIEGO (AP) — The Pacific air was so cold at the end of a 10-hour day at Torrey Pines that Tiger Woods thrust both hands in the front pockets of his rain pants as he walked off the course at the Farmers Insurance Open.

It was a fitting image. Woods made a marathon day look like he was out for a stroll.

Staked to a two-shot lead going into the third round of this fog-delayed tournament, Woods drove the ball where he was aiming and was hardly ever out of position. Even with a bogey on the final hole — the easiest on the back nine — Woods still had a 3-under 69 and expanded his lead by two shots.

In the seven holes he played in the fourth round later Sunday afternoon, Woods hit the ball all over the course and still made three birdies to add two more strokes to his lead.

Thanks to the fog that wiped out an entire day of golf on Saturday, the Farmers Insurance Open didn't stand a chance of finishing on Sunday.

Woods just made it look like it was over.

He had a six-shot lead with 11 holes to play going into the conclusion of the final round on Monday. The two guys chasing him were Brandt Snedeker, the defending champion, and Nick Watney, who won at Torrey Pines in 2008. Neither was waving a white flag. Both understood how much the odds were stacked against them.

"I've got a guy at the top of the leaderboard that doesn't like giving up leads," Snedeker said. "So I have to go catch him."

"All we can do tomorrow is go out and try to make him think about it a little bit and see what happens," Watney said.

And then there was Erik Compton, a two-time heart transplant recipient who had a birdie-eagle finish in the third round that put him in third place through 54 holes, still five shots behind Woods. Someone asked Compton about trying to chase Woods. He laughed.

"I'm trying to chase myself," he said.

Woods was at 17-under par for the tournament, and more than just a six-shot lead was in his corner.

He finished the third round at 14-under 202, making it the 16th time on the PGA Tour that he had at least a four-shot lead going into the final round. His record on the PGA Tour with the outright lead after 54 holes is 38-2, the exceptions being Ed Fiori in 1996 when Woods was a 20-year-old rookie and Y.E. Yang in the 2009 PGA Championship.

Woods attributed his big lead to the "whole package."

"I've driven the ball well, I've hit my irons well, and I've chipped and putted well," he said. "Well, I've hit good putts. They all haven't gone in."

Woods has a good history of Monday finishes, starting with Torrey Pines. It was on this course along the coast north of La Jolla that Woods won a 19-hole playoff against Rocco Mediate to capture the 2008 U.S. Open for his 14th major.

He also won the Pebble Beach National Pro-Am on a Monday in 2000 when he rallied from seven shots behind with seven holes to play. He won his lone title in The Players Championship on a Monday, along with a five-shot win in the Memorial in 2000, and a scheduled Monday finish in the Deutsche Bank Championship outside Boston.

Woods even gets to sleep in.

A Monday finish because of weather typically resumes in the morning so players can get to the next tournament. CBS Sports, however, decided it wanted to televise the conclusion, and so play won't begin until 2 p.m. EST. That decision might have been based on Woods being headed toward victory — just a hunch.

Woods already has won seven times at Torrey Pines, including the U.S. Open. That matches his PGA Tour record at Bay Hill and Firestone (Sam Snead won the Greensboro Open eight times, four each on a different course).

The tournament isn't over, and Woods doesn't see it that way.

"I've got to continue with executing my game plan. That's the idea," he said. "I've got 11 holes to play, and I've got to play them well."

He seized control with his 69 in the third round that gave him a four-shot lead, and he might have put this away in the two hours he played before darkness stopped play.

He badly missed the first fairway to the left, but had a gap through the Torrey pines to the green and had a two-putt par. He missed his next shot so far to the left that the ball wound up in the first cut of the adjacent sixth fairway. He still managed a simple up-and-down for par.

After a 10-foot birdie on the par-3 third, Woods couldn't afford to go left off the tee again because of the PGA Tour's largest water hazard — the Pacific Ocean. So he went miles right, beyond a cart path, a tree blocking his way to the green. He hit a cut shot that came up safely short of the green, and then chipped in from 40 feet for birdie.

"I was able to play those holes in 2-under par," Woods said. "And then I hit three great drives right in a row."

One of them wasn't that great — it was in the right rough, the ball so buried that from 214 yards that Woods hit a 5-wood. It scooted down the fairway and onto the green, setting up a two-putt birdie the stretched his lead to six shots. And after another good drive, the horn sounded to stop play. Because it was due to weather, Woods was able to finish the hole, and he two-putted for par.

Eleven holes on Monday were all that were keeping him from his 75th career win on the PGA Tour, and delivering a message to the rest of golf that there could be more of this to follow no matter what the golf course.

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Space Junk Menace: How to Deal with Orbital Debris

The saga of what steps that must be taken to deal with the evolving threat of Earth-circling orbital debris is a work in progress.  This menacing problem — and the possible cleanup solutions — is international in scope.

Space junk is an assortment of objects in Earth orbit that is a mix of everything from spent rocket stages, derelict satellites, chunks of busted up spacecraft to paint chips, springs and bolts. A satellite crash in February 2009, for example, marked the first accidental hypervelocity crash between two intact artificial satellites in Earth orbit. That cosmic crash created significant debris — a worrisome amount of leftover bits and pieces.

Against this backdrop of untidiness in space and the global worry among spacefaring countries it causes, experts continue to tackle the issue of exactly what to do about orbital debris. A number of rules have been pondered to address the space debris problem, from regulations that attempt to cut down on the shedding of new debris to better tracking of the human-made refuge, as well as scavenging concepts including fishing nets, lasers and garbage scows.

But how to best characterize the orbital debris dilemma, and its future, also stirs up debate and heated dialogue.

Point of no return

The clutter in Earth orbit is a situation that will continue to worsen, according to Marshall Kaplan, founder and principal of Launchspace in Bethesda, Md.

“The problem is that we’ve already fallen off that cliff,” Kaplan told SPACE.com. “That’s the reality of it and people don’t want to admit that reality.” [Photos of Space Junk & Cleanup Ideas]

Spending millions of dollars to retrieve space junk isn’t effective, Kaplan said.

Now, ways to better track and identify space debris are being devised. Low-Earth orbit is where the main problem is — from roughly 435 miles (700 kilometers) to about 745 miles (1,200 km), he said.

“It’s a serious, serious challenge,” Kaplan said. “This is not a U.S. problem … it’s everybody’s problem. And most of the people that produced the debris, the serious offenders, like Russia, China, and the United States, are not going to spend that kind of money. It’s just not a good investment.”

While the creation of orbiting junk continues rise with each rocket launch, there is no market for tackling the issue directly, Kaplan said.

“We’ve reached the point of no return. The debris will continue to get worse in terms of collision threats … even if not another satellite were launched, the problem will continue to get worse,” he added.

Speeding debris crashes

Kaplan said the frequency of collisions between active satellites and debris pieces is going to increase.

The real question, Kaplan said, is not what everyone is going to do about debris. Rather, the true question is what needs to be done about active satellites in harm’s way of speeding riffraff.

“My prediction is that we are going to evacuate the areas of high debris density. It’s just too dangerous to operate there. We’re going to need to reinvent how we use space,” Kaplan said. [Worst Space Debris Events of All Time]

In the case of large national security satellite assets, one option may be to distribute smaller satellites in lower altitudes, Kaplan added. These multiple layers of spacecraft would collectively create virtual products, such as imagery and other intelligence data. The users of this information would receive the same kind of data, but from a different satellite constellation, he said.

As one step toward that future, Kaplan is working with multiple universities to help establish new research centers on space debris and a next-generation national security space architecture.

Environmental stability

Darren McKnight, technical director for Integrity Applications Incorporated, headquartered in Chantilly, Va., suggested that the current debate on active debris removal and the evolution of the debris environment is still developing.

McKnight said that, currently, policymakers and engineers examine environmental stability, preventing the cascading of derelict collisions from increasing exponentially over the next century. This scenario, known as the “Kessler Syndrome,” is the primary metric to judge how many derelicts need to be removed and when they should be removed.

The Kessler Syndrome is one in which the density of objects in low Earth orbit is high enough that collisions between objects could cause a cascade. Each collision generates space debris, which increases the likelihood of further collisions. [Solar Sails Could Sweep Up Space Junk (Video)]

“The overall issue is that as we continue to consider active debris removal options, I question whether or not environment stability is the only metric to be tracking,” McKnight told SPACE.com.

Lethal space debris

McKnight, along with company colleague Frank Di Pentino, propose that the probability of satellite failure from impact from non-trackable, yet lethal debris fragments — in the 5 millimeter to 10 centimeter size range — is a more appropriate metric. The reason is because it directly reflects harmful effects of space debris on space operations. Furthermore, these effects are likely to occur much sooner than observable manifestations of the cascading effect.

McKnight and Di Pentino’s research suggests that any mitigation scheme, be it just-in-time collision avoidance, active debris removal or other methods, cannot rely on a model that does not account for projected add rates, new launches on other factors. They contend that collision rate is “not a sufficient metric” for assessing operational risk.

Wanted: A long-term plan

There is much work to do regarding orbital debris, said Donald Kessler, chair of the 2011 National Research Council (NRC) report “Limiting Future Collision Risk to Spacecraft: An Assessment of NASA’s Meteoroid and Orbital Debris Programs.” He is a retired head of NASA’s Orbital Debris Program Office and is a space debris and meteoroid consultant in Asheville, N.C.

Kessler said that the NRC committee that produced the report strongly felt that what was missing from the programs was a long-term strategic plan — one that outlined a path that eventually determines how  manage future space operations in a way that preserves the environment.

“However, this is not simply a NASA issue … it is an international issue, and will require a carefully coordinated effort,” Kessler said.

Can the space junk problem be solved?

NASA and the international community, Kessler said, “have already done enough research to know that the environment will continue to get worse if we continue on the same path … the only environmental issue to be resolved is how quickly the environment in various regions deteriorates.”

The international community, through the Inter-Agency Space Debris Coordination Committee (IADC), has been very active in understanding the current environmental trends, sharing information and establishing internationally recognized mitigation requirements.

However, Kessler said that current mitigation practices are insufficient, even with 100 percent compliance. Missing in action is a plan to determine what do about the predicted worsening space environment, he said — that is, how to stop or reverse the trend of increased debris resulting from increased collisions.

Sustainable environment

Kessler added that the fundamental issues to be resolved are:

• How do we minimize the possibility of future high-velocity collisions between spacecraft and upper stage rockets?


• If we cannot eliminate that prospect, how do we clean up after a collision?

“Removal from orbit, collision avoidance, satellite servicing and repair, satellite recycling in orbit, debris storage locations, change to using a ‘stable plane’ at higher altitudes especially in Geosynchronous Earth Orbit (GEO) … are all possibilities,” Kessler added. “Some are mutually exclusive and may not be appropriate at all altitudes, while others could combine to be more effective.”

Still to be sorted out is what type of legal structure might be needed in order to implement any plan, Kessler said.

“I believe it is time that the international community takes a serious look at the future of space operations,” Kessler said. “There’s need to begin a process to answer these questions and determine which path will most effectively provide a sustainable environment for spacecraft in Earth orbit.”

Leonard David has been reporting on the space industry for more than five decades. He is former director of research for the National Commission on Space and a past editor-in-chief of the National Space Society’s Ad Astra and Space World magazines. He has written for SPACE.com since 1999.

Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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Why haven't we learned from fires?

STORY HIGHLIGHTS

• Pyrotechnics, overcrowding, poor exits have contributed to tragic fires in recent years


• You would think the world would have learned from past incidents, John Barylick says


• Concertgoers have to be their own fire marshals, he says

Editor's note: John Barylick, author of "Killer Show," a book on the 2003 Station nightclub fire in Rhode Island, is an attorney who represented victims in wrongful death and personal injury cases arising from the fire.

(CNN) -- Sunday morning we awoke to breaking news of another tragic nightclub fire, this time in Brazil. At last report the death toll exceeded 230.

This tragedy is not without precedent. Next month will mark the 10th anniversary of a similar nightclub fire in Rhode Island. At this sad time, it's appropriate to reflect on what we've learned from club fires -- and what we haven't.

Rhode Island's Station nightclub fire of 2003, in which 100 concertgoers lost their lives, began when fireworks set off by Great White, an 80s heavy metal band, ignited flammable packing foam on the club's walls.

John Barylick

Panicked patrons stampeded toward the club's main exit, and a fatal pileup ensued. Contributing to the tragedy were illegal use of pyrotechnics, overcrowding and a wall covering that would have failed even the most rudimentary flammability tests.

Video images of the Station fire were broadcast worldwide: A concert begins; the crowd's mood changes from merry, to curious, to concerned, to horrified -- in less than a minute. You'd think the world would have learned from it. You would be wrong.

Deadly blazes: Nightclub tragedies in recent history

The following year, the Republica Cromanon nightclub in Argentina went up in flames, killing 194 people. The club was made to hold about 1,000 people, but it was estimated that more than 3,000 fans were packed inside the night of the fire, which began when fans began lighting flares that caught the roof on fire.

Then, in January 2009, at least 64 New Year's revelers lost their lives in a nightclub in Bangkok, Thailand, after fire ignited its ceiling. Many were crushed in a rush to get out of the club. In December of that same year, a fire in a Russian nightclub, ignited by pyrotechnics, killed 156 people. Overcrowding, poor exits, and indoor fireworks all played roles in these tragedies; yet no one bothered to learn from mistakes of the past.

While responsibility for concert disasters unquestionably lies with venue operators, performers and promoters, ultimately, we, as patrons of clubs and concerts, can enhance our own safety by taking a few simple steps. The National Fire Protection Association urges concertgoers to:

• Be observant. Is the concert venue rundown or well-maintained? Does the staff look well-trained?

• As you proceed to your seat, observe how long the process takes. Could you reverse it in a hurry? Do you pass through pinch points? Is furniture in the way?

• Once seated, take note of the nearest exit. (In an emergency, most people try to exit by the door they entered, which is usually not the closest, and is always overcrowded.) Then, share the location of that nearest exit with your entire party. Agree that at the first sign of trouble, you will all proceed to it without delay.

• Once the show begins, remain vigilant. If you think there's a problem, LEAVE IMMEDIATELY. Do not stay to "get your money's worth" despite concerns about safety. Do not remain to locate that jacket or bag you placed somewhere. No concert is worth your life. Better to read about an incident the next day than be counted as one of its statistics.

Read more: How to protect yourself in a crowd

To be sure, all fire codes must be vigorously enforced, and club and concert hall operators must be held to the highest standards. A first step is banning indoor pyrotechnics in all but the largest, stadium-type venues.

But, ultimately, we are our own best "fire marshals" when it comes to avoiding, and escaping, dangerous situations. We can still enjoy shows. But it is up to us to look out for our own safety.

In coming days, Rhode Islanders will follow the unfolding news from Brazil with a sense of queasy deja vu -- the rising body counts, the victim identification process, the grieving families, and the assigning (and dodging) of blame. If only they had learned from our tragedy.

The opinions expressed in this commentary are solely those of John Barylick.

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2 killed in West Rogers Park in possible carbon monoxide leak

Police are investigating whether a carbon monoxide leak led to the deaths of two people in West Rogers Park.

Authorities are investigating whether a carbon monoxide leak caused the deaths of two women in a West Rogers Park apartment building, officials said.

Paramedics were first called about 10:30 a.m. Sunday to the building in the 2500 block of West North Shore Avenue to transport one woman to the hospital, Chicago Fire Department spokeswoman Meg Ahlheim said.

The woman was taken in cardiac arrest to Swedish Covenant Hospital, Ahlheim said.

Fire officials at the scene called for a second ambulance, and another woman was taken to Swedish Covenant as well, Ahlheim said.

Both women died at the hospital.

Rasheeda Akhter, 77, was pronounced dead at 11:14 a.m., according to the Cook County medical examiner's office. The second victim, 18-year-old Zanib Ahmed, died at 9 p.m., according to the medical examiner's office.

Back at the building, fire officials checked the carbon monoxide levels but found no indication of a leak, Ahlheim said.

Paramedics were called back to the scene, however, about 3:45 p.m. for another woman found unresponsive. She was taken to St. Francis Hospital in Evanston in critical condition, Ahlheim said.

Officials checked carbon monoxide levels again, and while the meter readings in residential units did not indicate a leak, officials found a positive reading for a low level of carbon monoxide near a boiler in the basement, Ahlheim said.

Police suspect the deaths were caused by accidental carbon monoxide poisoning, but no official determination will be made until autopsy results are reported, Police News Affairs Officer Amina Greer said.

A spokeswoman for Peoples Gas, Jennifer Block, said representatives from the company were called to the building to assist police and fire officials. She referred further questions to the police and fire departments.

asege@tribune.com

Twitter: @AdamSege

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Violent protests greet Egypt emergency decree

CAIRO (Reuters) - A man was shot dead on Monday in a fifth day of violence in Egypt that has killed 50 people and prompted the Islamist president to declare a state of emergency in an attempt to end a wave of unrest sweeping the Arab world's biggest nation.

Under emergency powers announced by President Mohamed Mursi for the cities of Port Said, Ismailia and Suez on Sunday, the army will have the right to arrest civilians and to help police restore order.

A cabinet source told Reuters any trials would be before civilian courts, but the step is likely to anger protesters who accuse Mursi of using high-handed security tactics of the kind they fought against to oust president Hosni Mubarak.

Egypt's politics have become deeply polarized since those heady days two years ago, when protesters were making most of the running in the Arab Spring revolutions that sent shockwaves through the region.

Although Islamists have won parliamentary and presidential elections, the disparate opposition has since united against Mursi. Late last year he moved to expand his powers and push a constitution with Islamist leanings through a referendum punctuated by violent street protests.

Mursi's opponents accuse him of hijacking the revolution, listening only to his Islamist allies and breaking a promise to be a president for all Egyptians. They say too many hold-outs from the Mubarak era remain in their posts.

Islamists say their rivals want to overthrow by undemocratic means Egypt's first freely elected leader.

Some opposition groups have called for more protests in Cairo and elsewhere on Monday to mark the second anniversary of one of the bloodiest days in the revolution that erupted on January 25, 2011, and ended Mubarak's iron rule 18 days later.

Hundreds of demonstrators in Port Said, Ismailia and Suez, cities which all lie on the economically vital Suez Canal, turned out against Mursi's decision on Sunday within moments of him speaking. Activists there pledged to defy a curfew that starts at 9 p.m. (1700 GMT).

Instability in Egypt has raised concerns in Western capitals, where officials worry about the direction of a key regional player that has signed a peace deal with Israel.

The political unrest has been exacerbated by street violence linked to death penalties imposed on soccer supporters convicted of involvement in stadium rioting a year ago.

In Cairo on Monday, police fired volleys of teargas at stone-throwing protesters in and around Tahrir Square, cauldron of the anti-Mubarak uprising.

KILLED BY A GUNSHOT

A 46-year-old bystander was killed by a gunshot, a security source at the Interior Ministry said. It was not clear who fired the shot.

"We want to bring down the regime and end the state that is run by the Muslim Brotherhood," said Ibrahim Eissa, a 26-year-old cook, protecting his face from teargas wafting towards him.

Mursi also called for a national dialogue with his rivals for later on Monday, but the early response from members of the main opposition coalition suggested they saw little point.

Propelled to the presidency in a June election by the Muslim Brotherhood, Mursi has lurched through a series of political crises and violent demonstrations, complicating his task of shoring up the economy and preparing for a parliamentary election to cement the new democracy in a few months.

"The protection of the nation is the responsibility of everyone. We will confront any threat to its security with force and firmness within the remit of the law," Mursi said, offering condolences to families of victims in the canal zone cities.

Appealing to his opponents, the president called for a dialogue on Monday at 6 p.m. (1600 GMT), inviting a range of Islamist allies as well as liberal, leftist and other opposition groups and individuals to discuss the crisis.

The main opposition National Salvation Front coalition said it would not attend.

Mursi's call to hold talks was "cosmetic and not substantive", a leading member of the coalition, Mohamed ElBaradei, told a news conference.

SECURITY MEASURES

The opposition Front has distanced itself from the latest flare-ups but said Mursi should have acted far sooner to impose security measures that would have ended the violence.

"Of course we feel the president is missing the real problem on the ground, which is his own policies," Front spokesman Khaled Dawoud said. "His call to implement emergency law was an expected move, given what is going on, namely thuggery and criminal activity."

But other activists said Mursi's measures to try to impose control on the turbulent streets could backfire.

"Martial law, state of emergency and army arrests of civilians are not a solution to the crisis," Ahmed Maher of the April 6 movement that helped galvanize the 2011 uprising said. "All this will do is further provoke the youth. The solution has to be a political one that addresses the roots of the problem."

Thousands of mourners joined funerals in Port Said for the latest victims in the Mediterranean port city. Seven people were killed there on Sunday when residents joined marches to bury 33 others who had been killed a day earlier, most by gunshot wounds in a city where arms are rife.

Protests erupted there on Saturday after a court sentenced to death several people from the city for their role in deadly soccer violence last year, a verdict residents saw as unfair. The anger swiftly turned against Mursi and his government.

Rights activists said Mursi's declaration was a backward step for Egypt, which was under emergency law for Mubarak's entire 30-year rule. His police used the sweeping arrest provisions to muzzle dissent and round up opponents, including members of the Brotherhood and even Mursi himself.

Heba Morayef of Human Rights Watch in Cairo said the police, still hated by many Egyptians for their heavy-handed tactics under Mubarak, would once again have the right to arrest people "purely because they look suspicious", undermining efforts to create a more efficient and respected police force.

"It is a classic knee-jerk reaction to think the emergency law will help bring security," she said. "It gives so much discretion to the Ministry of Interior that it ends up causing more abuse, which in turn causes more anger."

(Additional reporting by Yasmine Saleh in Cairo and Yusri Mohamed in Ismailia; Editing by Will Waterman and Giles Elgood)

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Djokovic beats Murray for 3rd straight Aust. title

MELBOURNE, Australia (AP) — Novak Djokovic became the first man in the Open era to win three consecutive Australian titles when he beat Andy Murray 6-7 (2), 7-6 (3), 6-3, 6-2 in Sunday's final.

Little wonder he loves Rod Laver Arena.

"It's definitely my favorite Grand Slam," he said. "It's an incredible feeling winning this trophy once more. I love this court."

Djokovic has won four of his six major titles at Melbourne Park, where he is now unbeaten in 21 matches.

Nine other men had won back-to-back titles in Australia over 45 years, but none were able to claim three in a row.

Only two other men, American Jack Crawford (1931-33) and Australian Roy Emerson (1963-67), have won three or more consecutive Australian championships.

Born a week apart in May 1987 and friends since their junior playing days, Djokovic and Murray played like they knew each other's game very well in a rematch of last year's U.S. Open final. There were no service breaks until the eighth game of the third set, when Djokovic finally broke through and then held at love to lead by two sets to one.

Djokovic earned two more service breaks in the fourth set, including one to take a 4-1 lead when U.S. Open champion Murray double-faulted on break point.

"It's been an incredible match as we could have expected," Djokovic said. "When we play each other, it's always, we push each other to the limit and I think those two sets went over two hours, 15 minutes, physically I was just trying to hang in there. Play my game and focus on every point."

The 25-year-old Serb didn't rip his shirt off this time, as he did to celebrate his epic 5-hour, 53-minute win over Rafael Nadal in last year's final. He just did a little dance, looked up to the sky and then applauded the crowd after the 3-hour, 40-minute match.

Murray's win over Djokovic in the U.S. Open final last year ended a 76-year drought for British men at the majors, but he still is yet to make a breakthrough in Australia after losing a third final here in the last four years.

Djokovic's win went against the odds of recent finals at Melbourne Park. In four of the past five years, the player who won the second of the semifinals has finished on top in the championship match. But this year, Djokovic played his semifinal on Thursday — an easy 89-minute minute win over No. 4-seeded David Ferrer. Murray needed five energy sapping sets to beat 17-time major winner Roger Federer on Friday night.

"You don't wake up the next day and feel perfect, obviously," Murray said of the Federer match. "It's the longest match I played in six months probably. It obviously wasn't an issue today. I started the match well. I thought I moved pretty good throughout."

The win consolidated Djokovic's position as the No. 1-ranked player in the world, while Federer and Murray will be second and third when the ATP rankings are released Monday.

Their last two matches in Grand Slams — Murray's five-set win at last year's U.S. Open and Djokovic's victory here last year in five in the semifinals — had a total of 35 service breaks.

It was a vastly different, more tactical battle on Sunday, with the first two tight sets decided in tiebreakers.

"All our matches in last three years have been decided in a very few points, so it's really hard to say if I've done anything different," Djokovic said. "I tried to be more aggressive. So I went for my shots, especially in the third and fourth; came to the net quite often. I was quite successful in that percentage, so it worked well for me."

Murray, who called for a trainer to retape blisters on his right foot at the end of the second set, was visibly annoyed by noise from the crowd during his service games in the third set, stopping his service motion twice until the crowd quieted down. After dropping the third set, he complained about the noise to chair umpire John Blom.

"It's just a bit sore when you're running around," Murray said. "It's not like pulling a calf muscle or something. It just hurts when you run."

Djokovic came from 0-40 down in the second game of the second set to hold his serve, something he called "definitely one of the turning points."

"He missed an easy backhand and I think mentally I just relaxed after that," Djokovic said. "I just felt I'm starting to get into the rhythm that I wanted to. I was little more aggressive and started to dictate the play."

Although Djokovic went into the match with a 10-7 lead in head-to-heads, Murray had beaten Djokovic five out of eight times in tiebreakers, and that improved to six of nine after four unforced errors by Djokovic to end the first set.

Djokovic pegged back that edge in the second set, when Murray also didn't help his cause by double-faulting to give Djokovic a 3-2 lead, and the Serbian player didn't trail again in the tiebreaker.

On the double-fault, Murray had to stop as he was about to serve to pick up a feather that had fallen on the court.

"I could have served, it just caught my eye before I served ... I thought it was a good idea to move it," he said.

"Maybe it wasn't because I obviously double faulted. At this level it can come down to just a few points here or there. My probably biggest chance was at the beginning of the second set; (I) didn't quite get it. When Novak had his chance at the end of the third, he got his."

Djokovic will have little time to savor the win — he's playing Davis Cup for Serbia next weekend against Belgium.

"It's going to be a lot of fun ... to see how I can adjust to clay court in indoor conditions, playing away Davis Cup, which is always tricky," he said.

Andre Agassi was among those in the capacity crowd — the four-time Australian champion's first trip Down Under in nearly 10 years — and he later presented the trophy to Djokovic.

Victoria Azarenka, who won Saturday's women's singles final over Li Na, was also there with her boyfriend rapper Redfoo. Actor Kevin Spacey met in the dressing room with both players ahead of the match and later tweeted a photo of himself with them.

In the earlier mixed doubles final Sunday, wild-card entrants Jarmila Gajdosova and Matthew Ebden of Australia beat the Czech pair of Lucie Hradecka and Frantisek Cermak 6-3, 7-5.

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Women in infantry: Tough challenge?

Hospital Corpsman Shannon Crowley packs for a mission as Lance Cpl.. Kristi Baker sits on her bed in 2010 in Afghanistan.

STORY HIGHLIGHTS

• Maren Leed: Ban on women in combat has hurt operations, women's promotion


• Leed: Integrating women into the physically demanding infantry presents challenges


• Women are already in combat; she says, the "front line" and "rear line" no longer exist


• Leed: Research into women in infantry might show that some limits might be appropriate

Editor's note: Maren Leed is senior adviser, Harold Brown Chair in defense policy studies at the Center for Strategic and International Studies. From 2011 to 2012, she served as senior adviser to the chief of staff of the U.S. Army. Follow the Center for Strategic and International Studies on Twitter.

(CNN) -- In the coming years, lifting the ban on women in combat, announced Thursday by Defense Secretary Leon Panetta, might prove particularly challenging in the most iconic of military occupations -- the infantry, among the most physically demanding and tradition-bound branches of the Marines and the Army.

Determining the best path forward to integrate women into this elite group will require hard-nosed honesty, careful management and compelling leadership.

For the 65 years that women have enjoyed a permanent place in the United States military, they have been subject to restrictions. One rationale is the notion embedded in our culture that women should be shielded from great physical risks. Another is a recognition of the physical superiority of the average male over the average female. A third is the fear that unit cohesion, critical to military performance, would suffer with the introduction of women.

Maren Leed

These three concerns apply to varying degrees in the infantry. But the last 11 years of war have clearly demonstrated that warfare is no longer waged in a linear fashion, and that the concept of "front line" no longer applies.

Opinion: A more equal military? Bring back draft

Historically, logistics operations were conducted "in the rear," where risks were comparatively low. This has changed: In 2006 in Iraq, for example, one in every five truck convoys was attacked. Although infantry clearly remains one of the most dangerous military occupations, the proliferation of homemade bombs and other low-cost, lethal weaponry and tactics have heightened the risk of almost every occupation. War is more uniformly dangerous.

That said, physical differences between the sexes remains a thorny issue. Determining gender-neutral physical standards for an integrated infantry will be one of the most difficult tasks ahead.

Infantry soldiers and Marines are the primary forces for operations on foot. They not only travel long distances, but also frequently carry loads in excess of 50 pounds. Both the short- and long-term health effects of such demands can be significant.

Single mom fought alongside combat troops in Afghanistan

The Defense Department has consistently pursued solutions to lighten the load, from exoskeletons to unmanned vehicles that would serve as "pack mules," to the elusive quest for higher power, lower weight batteries.

The success of these efforts will benefit both men and women. But until that happens, research into the effects these physical demands have on women is necessary before determining the degree to which they can, and should, be part of the full range of infantry.

Whether men serving in the infantry will accept women as peers is another open question.

Those who oppose women in the infantry argue that they would change group dynamics, disrupt bonding and ultimately harm unit cohesion. In the past, these fears have been brought up regarding the participation of minorities and homosexuals, too. But data show these negative predictions don't come true. Instead, successful integration has happened with strong leadership, and, critically, a process that is broadly perceived to be fair.

Opinion: Women in combat a dangerous experiment

Even if the arguments underpinning the ban on women in combat have weakened, is there sufficient justification for change? The Joint Chiefs apparently believe so, as they have unanimously recommended the ban be lifted.

Each of the services already has been taking steps along these lines. This is in part driven by the evolution of the battlefield. When today's senior leaders were serving time in Iraq and Afghanistan, they realized that the restrictions on women sometimes also restricted their missions.

They implemented work-arounds and sought exceptions to policy. But they came home with firsthand experience of the mismatch between modern warfare and the policies limiting women's role. Women are in combat, and senior military leaders believe that future success demands they must remain available to be so, in even greater numbers.

From the institutional viewpoint, there are also concerns that the traditional limitations fail to make the best use of women in the service. Combat experience weighs heavily in promotion decisions, and restrictions have precluded women from gaining experiences equal to those of male counterparts.

Women are also excluded from many of the occupations disproportionately represented in senior leadership, and that automatically limits the number of women who can advance to the highest levels. At the same time, the pool of Americans eligible for military service is shrinking, and competition for high-quality recruits is intensifying. So it's imperative that the military fully leverage the talent of the men and women it has and that it seeks to attract.

By the numbers: Women in the U.S. military

The arguments in favor of lifting the ban on women in combat outweigh those against it. Despite Defense Secretary Leon Panetta's announcement on Thursday, the military services maintain the prerogative to preclude women from serving in certain positions or occupations.

Infantry, or at least some specialties within that branch, could well be a case in which restrictions are warranted. But military leaders have time to evaluate this proposition, and to set the conditions to make any change stick. The path ahead may not be smooth, but it is necessary.

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The opinions expressed in this commentary are solely those of Maren Leed.

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Fire kills more than 200 in Brazil nightclub

PORTO ALEGRE, Brazil—

At least 200 people were killed in a nightclub fire in southern Brazil on Sunday after a band's pyrotechnics show set the building ablaze, and fleeing patrons were unable to find the emergency exits, local officials said.

Bodies were still being removed from the Kiss nightclub in the southern city of Santa Maria, Major Gerson da Rosa Ferreira, who was leading rescue efforts at the scene for the military police, told Reuters.

Local officials said 180 people were confirmed dead, and Ferreira said the death toll would rise above 200. He said the victims died of asphyxiation or from being trampled, and that there were possibly as many as 500 people inside the club when the fire broke out at about 2:30 a.m.

Television footage showed people sobbing outside the club, while shirtless firefighters used sledge hammers and axes to knock down an exterior wall to open up an exit.

"It was really fast. There was a lot of smoke, really dark smoke," survivor Aline Santos Silva, 29, told Globonews TV. "We were only able to get out quickly because we were in a VIP area close to the door."

President Dilma Rousseff cut short a visit to Chile and was returning to Brazil following the blaze, her spokesperson said.

Luiza Sousa, a civil police official in Santa Maria, told Reuters the blaze started when a member of the band or its production team ignited a flare, which then set fire to the ceiling. The fire spread "in seconds," Sousa said.

The disaster recalls other incidents including a 2003 fire at a nightclub in West Warwick, Rhode Island, that killed 100, and a Buenos Aires nightclub blaze in 2004 that killed nearly 200. In both incidents, a band or members of the audience ignited fires that set the establishment ablaze.

Brazil's safety standards and emergency response capabilities are under particular scrutiny as the country prepares to host the 2014 World Cup soccer tournament and the 2016 Summer Olympics.

Rio Grande do Sul state Health Secretary Ciro Simoni said emergency medical supplies from all over the state were being sent to the scene.

Santa Maria is some 186 miles west of the state capital of Porto Alegre. "A sad Sunday!" tweeted Rio Grande do Sul Governor Tarso Genro. He said "all possible measures" were being taken in response and that he was on his way to the scene.

(Additional reporting by Guillermo Parra-Bernal, Todd Benson and Brian Winter; Editing by Eric Beech)

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Fire at nightclub kills more than 200 in Brazil

PORTO ALEGRE, Brazil (Reuters) - At least 200 people were killed in a nightclub fire in southern Brazil on Sunday after a band's pyrotechnics show set the building ablaze, and fleeing patrons were unable to find the emergency exits, local officials said.

Bodies were still being removed from the Kiss nightclub in the southern city of Santa Maria, Major Gerson da Rosa Ferreira, who was leading rescue efforts at the scene for the military police, told Reuters.

Local officials said 180 people were confirmed dead, and Ferreira said the death toll would rise above 200. He said the victims died of asphyxiation or from being trampled, and that there were possibly as many as 500 people inside the club when the fire broke out at about 2:30 a.m.

Television footage showed people sobbing outside the club, while shirtless firefighters used sledge hammers and axes to knock down an exterior wall to open up an exit.

"It was really fast. There was a lot of smoke, really dark smoke," survivor Aline Santos Silva, 29, told Globonews TV. "We were only able to get out quickly because we were in a VIP area close to the door."

President Dilma Rousseff cut short a visit to Chile and was returning to Brazil following the blaze, her spokesperson said.

Luiza Sousa, a civil police official in Santa Maria, told Reuters the blaze started when a member of the band or its production team ignited a flare, which then set fire to the ceiling. The fire spread "in seconds," Sousa said.

The disaster recalls other incidents including a 2003 fire at a nightclub in West Warwick, Rhode Island, that killed 100, and a Buenos Aires nightclub blaze in 2004 that killed nearly 200. In both incidents, a band or members of the audience ignited fires that set the establishment ablaze.

Brazil's safety standards and emergency response capabilities are under particular scrutiny as the country prepares to host the 2014 World Cup soccer tournament and the 2016 Summer Olympics.

Rio Grande do Sul state Health Secretary Ciro Simoni said emergency medical supplies from all over the state were being sent to the scene.

Santa Maria is some 186 miles west of the state capital of Porto Alegre. "A sad Sunday!" tweeted Rio Grande do Sul Governor Tarso Genro. He said "all possible measures" were being taken in response and that he was on his way to the scene.

(Additional reporting by Guillermo Parra-Bernal, Todd Benson and Brian Winter; Editing by Eric Beech)

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Wall Street Week Ahead: Bears hibernate as stocks near record highs

NEW YORK (Reuters) - Stocks have been on a tear in January, moving major indexes within striking distance of all-time highs. The bearish case is a difficult one to make right now.

Earnings have exceeded expectations, the housing and labor markets have strengthened, lawmakers in Washington no longer seem to be the roadblock that they were for most of 2012, and money has returned to stock funds again.

The Standard & Poor's 500 Index <.spx> has gained 5.4 percent this year and closed above 1,500 - climbing to the spot where Wall Street strategists expected it to be by mid-year. The Dow Jones industrial average <.dji> is 2.2 percent away from all-time highs reached in October 2007. The Dow ended Friday's session at 13,895.98, its highest close since October 31, 2007.

The S&P has risen for four straight weeks and eight consecutive sessions, the longest streak of days since 2004. On Friday, the benchmark S&P 500 ended at 1,502.96 - its first close above 1,500 in more than five years.

"Once we break above a resistance level at 1,510, we dramatically increase the probability that we break the highs of 2007," said Walter Zimmermann, technical analyst at United-ICAP, in Jersey City, New Jersey. "That may be the start of a rise that could take equities near 1,800 within the next few years."

The most recent Reuters poll of Wall Street strategists estimated the benchmark index would rise to 1,550 by year-end, a target that is 3.1 percent away from current levels. That would put the S&P 500 a stone's throw from the index's all-time intraday high of 1,576.09 reached on October 11, 2007.

The new year has brought a sharp increase in flows into U.S. equity mutual funds, and that has helped stocks rack up four straight weeks of gains, with strength in big- and small-caps alike.

That's not to say there aren't concerns. Economic growth has been steady, but not as strong as many had hoped. The household unemployment rate remains high at 7.8 percent. And more than 75 percent of the stocks in the S&P 500 are above their 26-week highs, suggesting the buying has come too far, too fast.

MUTUAL FUND INVESTORS COME BACK

All 10 S&P 500 industry sectors are higher in 2013, in part because of new money flowing into equity funds. Investors in U.S.-based funds committed $3.66 billion to stock mutual funds in the latest week, the third straight week of big gains for the funds, data from Thomson Reuters' Lipper service showed on Thursday.

Energy shares <.5sp10> lead the way with a gain of 6.6 percent, followed by industrials <.5sp20>, up 6.3 percent. Telecom <.5sp50>, a defensive play that underperforms in periods of growth, is the weakest sector - up 0.1 percent for the year.

More than 350 stocks hit new highs on Friday alone on the New York Stock Exchange. The Dow Jones Transportation Average <.djt> recently climbed to an all-time high, with stocks in this sector and other economic bellwethers posting strong gains almost daily.

"If you peel back the onion a little bit, you start to look at companies like Precision Castparts , Honeywell , 3M Co and Illinois Tool Works - these are big, broad-based industrial companies in the U.S. and they are all hitting new highs, and doing very well. That is the real story," said Mike Binger, portfolio manager at Gradient Investments, in Shoreview, Minnesota.

The gains have run across asset sizes as well. The S&P small-cap index <.spcy> has jumped 6.7 percent and the S&P mid-cap index <.mid> has shot up 7.5 percent so far this year.

Exchange-traded funds have seen year-to-date inflows of $15.6 billion, with fairly even flows across the small-, mid- and large-cap categories, according to Nicholas Colas, chief market strategist at the ConvergEx Group, in New York.

"Investors aren't really differentiating among asset sizes. They just want broad equity exposure," Colas said.

The market has shown resilience to weak news. On Thursday, the S&P 500 held steady despite a 12 percent slide in shares of Apple after the iPhone and iPad maker's results. The tech giant is heavily weighted in both the S&P 500 and Nasdaq 100 <.ndx> and in the past, its drop has suffocated stocks' broader gains.

JOBS DATA MAY TEST THE RALLY

In the last few days, the ratio of stocks hitting new highs versus those hitting new lows on a daily basis has started to diminish - a potential sign that the rally is narrowing to fewer names - and could be running out of gas.

Investors have also cited sentiment surveys that indicate high levels of bullishness among newsletter writers, a contrarian indicator, and momentum indicators are starting to also suggest the rally has perhaps come too far.

The market's resilience could be tested next week with Friday's release of the January non-farm payrolls report. About 155,000 jobs are seen being added in the month and the unemployment rate is expected to hold steady at 7.8 percent.

"Staying over 1,500 sends up a flag of profit taking," said Jerry Harris, president of asset management at Sterne Agee, in Birmingham, Alabama. "Since recent jobless claims have made us optimistic on payrolls, if that doesn't come through, it will be a real risk to the rally."

A number of marquee names will report earnings next week, including bellwether companies such as Caterpillar Inc , Amazon.com Inc , Ford Motor Co and Pfizer Inc .

On a historic basis, valuations remain relatively low - the S&P 500's current price-to-earnings ratio sits at 15.66, which is just a tad above the historic level of 15.

Worries about the U.S. stock market's recent strength do not mean the market is in a bubble. Investors clearly don't feel that way at the moment.

"We're seeing more interest in equities overall, and a lot of flows from bonds into stocks," said Paul Zemsky, who helps oversee $445 billion as the New York-based head of asset allocation at ING Investment Management. "We've been increasing our exposure to risky assets."

For the week, the Dow climbed 1.8 percent, the S&P 500 rose 1.1 percent and the Nasdaq advanced 0.5 percent.

(Reporting by Ryan Vlastelica; Additional reporting by Chuck Mikolajczak; Editing by Jan Paschal)

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