U.S. Air Force Staff Sgt. George Sherman, 1st Operations Group flight equipment section chief, explains functions of the safety equipment pilots wear while performing their duties to NASCAR driver Ricky Stenhouse, Jr., during a tour of of Langley Air Force Base, Va., April 26, 2012. Sternhouse learned about helmets, flight suits and night-vision goggles. (U.S. Air Force photo by Senior Airman Wesley Farnsworth/Released)