HELMET INSPECTION U. S. Air Force Staff Sgt. Courtney Martin inspects a helmet before a flight on Bagram Airfield, Afghanistan, Sept. 2, 2010. Martin, an aircrew flight equipment technician, is assigned to the 510th Expeditionary Fighter Squadron. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 926739-Z-GUR04-475.jpg Photo Gallery