FILE - In this June 7, 2007 file photo, a CV-22 Osprey aircraft stationed at Kirtland Air Force Base kicks up a cloud of dust as it touches down at the Grants/Milan Airport in Grants, New Mexico, USA.... more 
FILE - In this June 7, 2007 file photo, a CV-22 Osprey aircraft stationed at Kirtland Air Force Base kicks up a cloud of dust as it touches down at the Grants/Milan Airport in Grants, New Mexico, USA. Gunfire hit three U.S. military CV-22 Osprey aircraft Saturday, Dec. 21, 2013 trying to evacuate American citizens in Bor, the capital of the remote region of Jonglei state in South Sudan, that on Saturday became a battle ground between South Sudan's military and renegade troops, officials said, with four U.S. service members wounded in the attack. (AP Photo/Gallup Independent, Matt Hinshaw, File) less 
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Associated Press | Photo By Gallup Independent, Matt Hinshaw, File
Sat, Dec 21, 2013 2:34 PM EST