Kentucky Derby winner Orb stands as he is cooled down after a workout at Pimlico Race Course in Baltimore, Friday, May 17. The Preakness Stakes horse race is scheduled to take place May 18.

Orb works out in preparation for the upcoming 138th running of the Preakness Stakes at Pimlico Race Course in Baltimore, Maryland, on May 17. The Preakness Stakes, the second leg of U.S. thoroughbred racing's Triple Crown, will be run Saturday.

Orb grazes under the watchful eyes of exercise rider Jennifer Patterson (2nd R) and trainer Shug McGaughey (R) after an early morning workout in preparation for the upcoming 138th running of the Preakness Stakes at Pimlico Race Course in Baltimore, Maryland, on May 17. The Preakness Stakes, the second leg of U.S. thoroughbred racing's Triple Crown, will be run Saturday.

Lindsey Vonn of the U.S. is airlifted after crashing during the women's Super G race at the World Alpine Skiing Championships in Schladming Feb. 5

Tina Maze of Slovenia reacts after learning that her competitor Lindsey Vonn of the U.S. did not complete the race, during the women's Super G race at the World Alpine Skiing Championships in Schladming on Feb. 5.

Lindsey Vonn competes during the women's Super-G event of the 2013 Ski World Championships in Schladming, Austria on Feb. 5.

An Afghan man relaxes on a tube at a public swimming pool in the city of Kabul on Aug. 14.

An Afghan youth dives at a public swimming pool in the city of Kabul on August 14.

A patriotic canal boat resident along with his dog on his vessel covered in both union flag of Britain and the England flag close to the main site of the 2012 Olympic Games.

A security guard mans his station on the River Lea close to the site of the 2012 Olympic Games (the stadium can be seen in the distant background). This is the point from which all navigation has been blocked on the river as security measure during the games.

A family dressed in bizarre patriotic morph suits take part in a parade at Camp Bestival. Their costume is part of their support for the 2012 Olympic Games which they had watched on a giant screen on the previous evening.This music festival takes place at Lulworth Castle in Dorset.

A relaxed scene at Haggerston Park in Hackney, East London, as a relatively small group enjoys watching the 2012 Olympic Games on a big screen. At the time they were watching the tennis mixed doubles tournament.

Marcel Nguyen of Germany competes in the horizontal bar during the men's individual all-around gymnastics final in the North Greenwich Arena during the London 2012 Olympic Games August 1. This picture was taken using multiple exposures.

Marcel Nguyen of Germany competes in the horizontal bar during the men's individual all-around gymnastics final in the North Greenwich Arena during the London 2012 Olympic Games on August 1. This picture was taken using multiple exposures.

A competitor exercises as he waits backstage during the 2012 International Bodybuilding and Fitness Invitation Championship in Hong Kong on July 14. Participants, who darken their skin with tanning products and apply oils to increase shine, do a series of mandatory poses and display their best shaped muscles to a panel of judges who assign points based on their appearance.

A competitor gets tanning product applied during the 2012 International Bodybuilding and Fitness Invitation Championship in Hong Kong on July 13,.

A competitor exercises backstage during the 2012 International Bodybuilding and Fitness Invitation Championship in Hong Kong on July 13.

Competitors wait backstage during the 2012 International Bodybuilding and Fitness Invitation Championship in Hong Kong on July 15.

Claire Lomas, who is paralyzed and walks with the aid of a "bionic" suit, finishes the London Marathon on May 8, 16 days after the event began. The former chiropractor was in tears as she became the first person to complete any marathon using a bionic ReWalk suit.

Claire Lomas of Britain celebrates after finishing the London Marathon, 16 days after the race began, in London, Britain, on May 8. Lomas, who is paralyzed from the waist down following a horse riding accident, is the first person to complete a marathon in a bionic ReWalk suit.

An Army Rapier missile defense battery is deployed at Blackheath insight of the Canary Wharf financial center on May 2, in London, England. The missiles are being readied as part of Operation Exercise Olympic Guardian which is taking place in London over the next few days to test security for the London 2012 Olympics.

Chinook Helicopters fly over the Olympic Stadium in London on May 2. London launched a major military exercise Wednesday to check security responses for the 2012 Olympics, as the final wave of test sports events got under way.

RAF ground technicians work on a RAF Typhoon fighter aircraft at RAF base Northolt, where four of the aircraft will be based as part of the Olympics related security exercise in west London, Wednesday, May 2. The Typhoon interceptor aircraft forms a part of a co-ordinated defense against possible threats to the London 2012 Olympic games, involving all three of the British armed services, with high end weaponry including a missile defence system, fighter aircraft and AWACS aircraft.

Hot walker Cesar Zarco helps give Kentucky Derby entrant Union Rags a bath at Churchill Downs on May 2, in Louisville, Ky.

Kentucky Derby entrant Daddy Nose Best grazes after a morning workout at Churchill Downs Wednesday, May 2, in Louisville, Ky.

Exercise rider Zeke Castro takes Kentucky Derby entrant Went the Day Well for a workout at Churchill Downs on May 1.

Horses and exercise riders walk to the track during early morning workouts as preparations are in full swing for the 138th running of the Kentucky Derby at Churchill Downs in Louisville, Kentucky, on May 1.

People pass by an artwork painted on a wall in East London depicting the Olympic rings which was created by a street art organisation called "The Toasters" April 18. The Toasters are releasing a limited edition screen print of the design to mark the 100 day point before the opening ceremony for the London 2012 Olympic Games.

Olympic officials and the media admire a large set of Olympic Rings, created with at least 20,000 flowers and plants in Kew Gardens on April 18, in London, England. The event at Kew gardens was been held to mark 100 days to go until the opening ceremony of the Olympic Games on July 27 and to announce the official motto of the London Olympics as "Inspire a generation."

Children wave from the top of a giant sandcastle adorned with the Olympic rings and flags built to celebrate 100 days to go to the 2012 London Olympic Games on the beach at Weymouth on April 13. London marked on April 18, 100 days to go until Queen Elizabeth II declares the 2012 London Olympics open, making the British captial the first city in the modern era to host the Games three times.

Schoolchildren form the number 100 to mark to mark the 100 day point before the opening ceremony for the London 2012 Olympic Games, on the lawn of Belfast City Hall April 18.

Colombian matador Luis Bolivar prepares to drive a sword into a bull during a bullfight in The Maestranza bullring in Seville, Spain on April 16.

A young boy watches Colombian matador Luis Bolivar before the start of a bullfight in The Maestranza bullring in Seville, Spain on April 16.

Colombian matador Luis Bolivar performs a pass to a bull during a bullfight on April 16 at The Maestranza bullring in Seville, Spain.

Colombian matador Luis Bolivar during a bullfight in The Maestranza bullring in Seville, Spain on April 16.

Britain's Camilla, center, Duchess of Cornwall, and Zara Phillips, right, react as Wishfull Thinking falls unseating jockey Richard Johnson during The Queen Mother Champion Chase at the Cheltenham Festival horse racing meet in Gloucestershire, western England on March 14.

Wishfull Thinking , left, falls, unseating jockey Richard Johnson during the Queen Mother Champion Steeple Chase at the Cheltenham Festival horse racing meet in Gloucestershire, western England on March 14.

Richard Johnson riding Wishful Thinking falls during The sportingbet.com Queen Mother Champion Steeple Chase at Cheltenham racecourse on March14, in Cheltenham, England.

Richard Johnson riding Wishful Thinking falls during The sportingbet.com Queen Mother Champion Steeple Chase at Cheltenham racecourse on March14 in Cheltenham, England.