BAGRAM REPAIRS U.S. Army Sgt. Patrick Purtle performs mechanical repairs on a UH-60 Black Hawk helicopter on Bagram Airfield, Afghanistan, July 20, 2009. Purtle is assigned to Company C, 1st Battalion, 168th Aviation Regiment. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 298784-H-ORF87-156.jpg Photo Gallery