Staff Sgt. Brian Stevenson, 27th Fighter Squadron avionics specialist, fills out his gas mask inspection card during the Operational Readiness Inspection at Langley Air Force Base, Va., April 9, 2011. The inspection is designed to evaluate the ability of installation personnel to efficiently deploy military members, cargo and equipment while also adjusting to rapidly changing security conditions. (U.S. Air Force photo/Senior Airman Zachary Wolf)