** FILE ** U.S. soldiers board a military plane as they leave Afghanistan from the U.S. base in Bagram Air Field north of Kabul, Afghanistan, on Thursday, July 14, 2011. (AP Photo/Musadeq Sadeq)

Photo by: Musadeq Sadeq

** FILE ** U.S. soldiers board a military plane as they leave Afghanistan from the U.S. base in Bagram Air Field north of Kabul, Afghanistan, on Thursday, July 14, 2011. (AP Photo/Musadeq Sadeq)