Air Force Master Sgt. Alex Kruhlinski, performs post mission maintenance on the radio antennas of a mine resistant vehicle Sept. 5, 2011, at Forward Operating Base Nejrab in Afghanistan's Kapisa province. Kruhlinski left a successful civilian career to join the U.S. Air Force after the events of 9/11. (U.S. Air Force photo by Staff Sgt. Jason Huddleston)