U.S. Troop Withdrawal From Afghanistan
FOB SHANK, AFGHANISTAN - MAY 4: An American troop runs near FOB Shank on May 4, 2013. Of the 800 U.S. and NATO coalition's bases in Afghanistan, about 450 have been transferred to Afghan forces and 225 have been closed. U.S. soldiers and marines are part of the NATO troop withdrawal from Afghanistan, to be completed by the end of 2014. (Photo by Robert Nickelsberg/Getty Images)