Lt. Col. William Butz, 149th Fighter Squadron commander, taxis an F-22 Raptor to the runway during an Operational Readiness Inspection at Langley Air Force Base, Va., April 10, 2011. The inspection evaluates an installation's ability 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)