Desperate villagers rush to a window of a U.S. Navy Seahawk helicopter as crewmen deliver aid in an emergency drop in San Jose, Philippines, Monday, November 18, 2013. (Photo by Wally Santana/AP Photo)

A tornado moves northeast Sunday, November 17, 2013, two miles west of Flatville, Ill. The tornado damaged many farm buildings and homes on its way to Gifford, Ill., where scores of houses were devastated. (Photo by Jessie Starkey/AP Photo/News-Gazette)

A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (Photo by Sue Ogrocki/AP Photo)

Members of a South Korean Air Force honor guard throw their guns in the air during a press day of an air show as part of the Seoul International Aerospace & Defense Exhibition which will be held from October 25 to November 3, at Cheongju International Airport in Cheongju, south of Seoul, South Korea, Thursday, October 24, 2013. (Photo by Lee Jin-man/AP Photo)

In a photo made with a fisheye lens, the Tribute in Light rises above buildings in lower Manhattan, during a test, Tuesday, September 10, 2013 in New York. The light display commemorates the twin towers of the World Trade Center that were destroyed in terrorist attacks 12 years ago on September 11, 2001. (Photo by Mark Lennihan/AP Photo)

The sun rises in Seaside Heights, N.J., Monday, February 25, 2013, behind the Jet Star Roller Coaster which has been sitting in the ocean after part of the Funtown Pier was destroyed during Superstorm Sandy. (Photo by Mel Evans/AP Photo)

A waitress looks on from a shop as shepherds, unseen, lead their sheep through the centre of Madrid, Spain, Sunday, October 6, 2013. Spanish shepherds led flocks of sheep through the streets of downtown Madrid in defense of ancient grazing, migration and droving rights threatened by urban sprawl and man-made frontiers. (Photo by Andres Kudacki/AP Photo)

Masked Palestinians use a back car seat as a shield during a protest to support Palestinian prisoners, outside Ofer, an Israeli military prison near the West Bank city of Ramallah, Tuesday, February 19, 2013. (Photo by Bernat Armangue/AP Photo)

Trees stand in this aerial photograph of the Boreal Forest near Fort McMurray, Alberta, Canada, on Tuesday, March 26, 2013.(Photo by Brett Gundlock/Bloomberg)

Japan Airlines Co. (JAL) group companies' new employees pose for photographs in front of a JAL aircraft during a welcoming ceremony at the company's hangar near Haneda Airport in Tokyo, Japan, on Monday, April 1, 2013. (Photo by Kiyoshi Ota/Bloomberg)

A worker stands between rows of sewing machines in the garment area at a PT Sri Rejeki Isman (Sritex) factory in Sukoharjo, Java, Indonesia, on Wednesday, March 27, 2013. (Photo by Dadang Tri/Bloomberg)

A woman is injured during a protest at a military parade marking Brazil's Independence Day in Rio de Janeiro, Brazil, Saturday, September 7, 2013. Brazilians are protesting corruption and poor public services. (Photo by Silvia Izquierdo/AP Photo)

An employee uses the light from a head torch to illuminate the machine cut walls of a potash mine operated by OAO Uralkali in Berezniki, Russia, on Friday, August 23, 2013. (Photo by Andrey Rudakov/Bloomberg)

Wolf researcher Werner Freund bites into a deer cadaver next to a Mongolian wolf in an enclosure at Wolfspark Werner Freund, in Merzig in the German province of Saarland January 24, 2013. Freund, 79, a former German paratrooper, established the wolf sanctuary in 1972 and has raised more than 70 animals over the last 40 years. Werner has to behave as the wolf alpha male of the pack to earn the other wolves respect and to be accepted. (Photo by Lisi Niesner/Reuters)

A laborer sorts onions inside Shivshankar Trading Co.'s onion storehouse at the Agriculture Produce Market Committee (APMC) wholesale market in Lasalgaon, India, on Saturday, August 31, 2013. (Photo by Dhiraj Singh/Bloomberg)

A drone camera hovers near a giant yellow rubber duck created by Dutch artist Florentijn Hofman as an art piece floating in an enclosed branch of Beijing's Yongding river in Beijing, China, Friday, September 6, 2013. (Photo by Ng Han Guan/AP Photo)

A protester holding a shield attempts to block a jet of water from a police water cannon during clashes in Istanbul's Taksim Square June 11, 2013. (Photo by Osman Orsal/Reuters)

A meteor's trail over the Ural Mountains' city of Chelyabinsk, about 930 miles east of Moscow, Russia, on February 15, 2013. The 13,000 ton meteor hit Earth's atmosphere at 42,000 mph and exploded, smashing windows and causing hundreds of minor injuries. (Photo by Yekaterina Pustynnikova/AP Photo/Chelyabinsk.ru)

Farmer Donald O'Reilly searches for sheep or lambs trapped in a snow drift near weakened animals that had just been rescued, in the Aughafatten area of County Antrim, Northern Ireland March 26, 2013. (Photo by Cathal McNaughton/Reuters)

People rescue garment workers trapped under rubble at the Rana Plaza building after it collapsed, in Savar, 30 km (19 miles) outside Dhaka April 24, 2013. (Photo by Andrew Biraj/Reuters)

French daredevil Alain Robert reaches into his chalk bag as he scales the Habana Libre hotel without using ropes or a safety net, in Havana, Cuba, Monday, February 4, 2013. (Photo by Ramon Espinosa/AP Photo)

Cars sit buried in snow near Hamden, Connecticut, on February 10, 2013, in the aftermath of a storm that hit Connecticut and much of New England. (Photo by Craig Ruttle/AP Photo)

A section of highway is washed out by flooding along the South Platte River in Weld County, Colorado near Greeley, Saturday, September 14, 2013. (Photo by John Wark/AP Photo)

Song Xuxia, 19, receives treatment at a hospital after a 6.6 magnitude earthquake hit Minxian county, Dingxi, Gansu province July 23, 2013. The death toll from two earthquakes in China's western Gansu province has climbed to 95, with more than 1000 people injured, after around 51,800 buildings collapsed and tens of thousands more were badly damaged. (Photo by Reuters/Stringer)

An aerial view shows the Costa Concordia as it lies on its side next to Giglio Island taken from an Italian navy helicopter August 26, 2013. (Photo by Alessandro Bianchi/Reuters)

Sixth grade students from the Park Maitland School in Maitland, Florida, watch as Marine One carrying U.S. President Barack Obama takes off from the South Lawn at the White House in Washington as he departs for Las Vegas, January 29, 2013. (Photo by Larry Downing/Reuters)

Hindu devotees lie on the ground in front of running cows as part of a ritual during the Govardhan Puja festival in Dhar, some 60 kilometers (37 miles) from Indore, Madhya Pradesh state, India, Monday, November 4, 2013. (Photo by Chetan Soni/AP Photo)

An Indonesian youth clings on the dorsal fin of a beached whale shark as fishermen prepare to pull it back to the sea at Kenjeran beach in Surabaya, East Java, Indonesia, Tuesday, October 22, 2013. The whale was survived and successfully released back into the sea. (Photo by AP Photo/Trisnadi)

A man from Dinka tribe holds his AK-47 rifle in front of cows in a Dinka cattle herders camp near Rumbek, capital of the Lakes State in central South Sudan December 14, 2013. (Photo by Goran Tomasevic/Reuters)

Ghana's John Paintsil reacts after the end of time in Ghana's African Cup of Nations Group B soccer match against Congo at Nelson Mandela Bay Stadium in Port Elizabeth, South Africa, Sunday, January 20, 2013. (Photo by Rebecca Blackwell/AP Photo)

Fireworks announce the official opening of the Rijksmuseum in Amsterdam, The Netherlands, 13 April 2013. (Photo by Robin Utrecht/EPA)

Volker Maiwald, executive officer and habitat engineer of Crew 125 EuroMoonMars B mission, walks among the rock formations while collecting geologic samples for study at the Mars Desert Research Station (MDRS) in the Utah desert March 2, 2013. (Photo by Jim Urquhart/Reuters)

A victim's body lies amid rubble at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh,Thursday, April 25, 2013. (Photo by A. M. Ahad/AP Photo)

Jennifer Lawrence reacts as she poses backstage with her Oscar after winning the best actress award for her role in “Silver Linings Playbook” at the 85th Academy Awards in Hollywood, California, February 24, 2013. (Photo by Mike Blake/Reuters)

North Korean soldiers patrol along the banks of Yalu River, near the North Korean town of Sinuiju, opposite the Chinese border city of Dandong, on April 11, 2013. (Photo by Jacky Chen/Reuters)

Pakistani children, survey woods from a burning field, which was used by fruit and vegetable sellers to store their wooden boxes, on the outskirts of Islamabad, Pakistan, Monday, Nov. 4, 2013. (Photo by Muhammed Muheisen/AP Photo)

Chickens perch on the roof of a hennery to escape rising floodwaters after Typhoon Utor hit Maoming, Guangzhou province, China, August 15, 2013. (Photo by Reuters/Stringer)

Prince Harry as he takes a coaching session for youngsters at Twickenham Stadium, London, on October 17, 2013. (Photo by Ian Gavan/PA Wire)

In a provocative performance that echoed widely across news media and social media, Miley Cyrus and Robin Thicke perform “Blurred Lines” during the 2013 MTV Video Music Awards in New York, on August 25, 2013. (Photo by Lucas Jackson/Reuters)

A Turkish riot policeman sprays tear gas as people protest against the destruction of trees in a park brought about by a pedestrian project, in Taksim Square in central Istanbul, Turkey, on May 28, 2013. (Photo by Osman Orsal/Reuters)

In this Friday, September 20, 2013 photo, “Free Syrian Army” fighters take cover moments after shelling a rocket on government forces in Kafr Nboudah village, Idlib province, northern Syria. (Photo by AP Photo)

A vending machine, brought inland by a tsunami, is seen in a abandoned rice field inside the exclusion zone at the coastal area near Minamisoma in Fukushima prefecture September 21, 2013. (Photo by Damir Sagolj/Reuters)

Thai anti-government protesters kick and hit at the drawing of Tharit Pengdit, chief of the Department of Special Investigation (DSI), after storming into his office during a rally in Bangkok, Thailand Monday, December 23, 2013. (Photo by Wason Wanichakorn/AP Photo)

The balloon “New Mexico Sunrise” strikes a power line after launching during Wednesday October 9, 2013, mass ascension at the 2013 Albuquerque International Balloon Fiesta in Albuquerque, N.M. (Photo by Greg Abernathy/AP Photo/The Catalyst)

A DC-10 tanker drops fire retardant on a wildfire in the San Gabriel Mountains in Azusa, Calif., on Tuesday, September 24, 2013. (Photo by Nick Ut/AP Photo)

The wrapped bodies of two dead people hang from an overpass as three more dead bodies lie on the ground in Saltillo, Mexico, on March 8, 2013. Three of the five male bodies were hanging from the overpass while two others were lying on the ground when they were found early Friday, according to local media. While drug-related violence in Mexico is slightly down from recent years, it remained high throughout 2013. (Photo by Reuters/Stringer)

A submerged idol of Hindu Lord Shiva stands in the flooded River Ganges in Rishikesh, in the northern Indian state of Uttarakhand, India, Tuesday, June 18, 2013. (Photo by AP Photo)

A protestor is hit by water sprayed from a water cannon during clashes in Taksim Square, Istanbul, Turkey, 11 June 2013. (Photo by Kerim Okten/EPA)