Crowd members attempt to keep dry with umbrellas and ponchos prior to the 2012 Sydney Gay & Lesbian Mardi Gras Parade on March 3, 2012 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Military staff members of the German Bundeswehr check an Eurocopter Tiger military attack helicopter at the Eurocopter plant on March 8, 2012 in Donauworth, Germany. EADS, the parent company of Eurocopter as well as airplane manufacturer Airbus, is scheduled to announce financial results for 2011 today. (Photo by Johannes Simon/Getty Images)

Men use ropes to try and right a supply truck overloaded with wheat straw along a road in Dargai, in the Malakand district, about 100 miles northwest of Pakistan's capital Islamabad, on April 13, 2012. (Photo by Mian Khursheed/Reuters)

Bottlenose dolphins leap off the Southern California coast on January 30, 2012 near Dana Point, California. A coalition that includes Native American tribes, Earthjustice and the Natural Resources Defense Council is on the National Marine Fisheries Service for more protection for dolphins, whales, and other migrating marine animals from the use of sonar in training by the US Navy on the West Coast. (Photo by David McNew/Getty Images)

An Israeli soldier leaves the battlefield after an army exercise on at the Shizafon army base, in the Negev Desert north of the southern city of Eilat on January 31, 2012 in Shizafon, Israel. (Photo by Uriel Sinai/Getty Images)

Bud Light Hotel Correspondent Leila Mahadin (R) interviews a Playboy Bunny at the 2012 Playboy Party hosted by Bud Light Hotel at Bud Light Hotel on February 3, 2012 in Indianapolis, Indiana. (Photo by Stephen Lovekin/Getty Images for Bud Light Hotel)

Members of the King's Troop Royal Horse Artillery fire a 41 gun salute in Hyde Park to mark the 60 anniversary of the accession of Her Majesty Queen Elizabeth II on February 6, 2012 in London, England. (Photo by Oli Scarff/Getty Images)

Women walk through the snow on Wimbledon common with their dogs on February 10, 2012 in London, England. The Met Office cold weather alert remains at Level 3 as southern parts of England continue to suffer from cold weather and freezing conditions, with further snowfall overnight. (Photo by Peter Macdiarmid/Getty Images)