Wright Bryan

A horse makes his way through the pre-dawn fog at the Fair Grounds Race Course in New Orleans in 2010. The Fair Grounds barn area opened earlier than normal this season to accommodate horses traveling from recently concluded meets at Arlington Park and Evangeline Downs. Alexander Barkoff/AP hide caption

Hotels and apartment buildings line the Copacabana beach in Rio de Janeiro, Brazil. The head of a sports travel agency specializing in packages for the Rio 2016 Olympics said that the company's business could be devastated if the Zika virus continues to spread. Silvia Izquierdo/AP hide caption

Tourists snorkel around Upolu Cay on the Great Barrier Reef near Cairns off the Australian northeast coast in December 1998. Brian Cassey/AP hide caption

Pallbearers carry the casket of Sen. Clementa Pinckney, one of the nine killed in last week's shooting, into Emanuel AME Church in Charleston, S.C., for his wake Thursday. David Goldman/AP hide caption

Boylston Street's 26-mile marker will be a welcome sight to the thousands of runners who are in today's Boston Marathon. Today marks the 118th running of the race. Jared Wickerham/Getty Images hide caption

A March 2014 portrait of Demi Clark in front of her Mount Pleasant, S.C., home. Wright Bryan/NPR hide caption

Serbia's Novak Djokovic (left) embraces Argentina's Juan Martin Del Potro after their match on day 11 of the 2013 Championships at Wimbledon. Carl Court/AFP/Getty Images hide caption

This undated photo provided by the St. Andrews Historic Seaport and Commercial Marina in Panama City, Fla., shows American David Dyche, skipper of the 70-foot (21-meter) vessel Nina. AP hide caption

Supporters of the Muslim Brotherhood hold a picture of deposed President Mohammed Morsi during a rally outside Cairo's Rabaa al-Adawiya mosque on Friday. Mahmud Hams/AFP/Getty Images hide caption

Veteran USPS letter carrier Michael McDonald gathers mail to load into his truck before making his delivery run in the East Atlanta neighborhood on Thursday, Feb. 7, 2013, in Atlanta. David Goldman/AP hide caption

The control tower at Troutdale Airport in Troutdale, Ore., one of the towers slated for closure. Don Ryan/AP hide caption

A customer rolls a joint made of half marijuana and half tobacco in Olympia, Wash., on December 9, 2012. Nick Adams/Reuters/Landov hide caption

David Ranta speaks with reporters at Brooklyn Supreme court in New York after being released from custody on Thursday, March 21, 2013. Mary Altaffer/AP hide caption

A December 22, 2012, photograph of Italian marines Massimiliano Latorre (R) and Salvatore Girone (L) at Ciampino airport near Rome. Vincenzo Pinto/AFP/Getty Images hide caption

Apollo 11 climbs toward orbit after liftoff on July 16, 1969. In 2 1/2 minutes of powered flight, the S-IC booster lifts the vehicle to an altitude of about 39 miles, some 55 miles downrange. NASA hide caption