U.S. Air Force airmen assigned to the 83rd Expeditionary Rescue Squadron perform routine maintenance on a HH-60G Pave Hawk at Bagram Air Field, Afghanistan, Nov. 22, 2013. Every three days, preflight maintenance is done on the Pave Hawk to ensure that it remains safe and airworthy. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)