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A Hillsborough County Sheriff's motorcycle following an accident while escorting US President Barack Obama to a speech about trade policies with Latin America at the Port of Tampa in Tampa, Florida, April 13, 2012.
US President Barack Obama shakes the hand of NASCAR driver Tony Stewart during an event on the South Lawn of the White House April 17, 2012 in Washington.
A Syrian girl reads a book in her damaged house in Talbisa area in Homs, northern Syria April 10, 2012.
Firefighters spray water on a burning fuel tanker in Kabul April 23, 2012. The cause of the blaze is unknown and police are investigating.
A handout picture released by the Higher Committee for the Syrian Revolution on April 11, 2012 shows a boy holding a burnt out bicycle in a house destroyed by violence in the town of Dael in the southern Syrian province of Daraa.