U.S. Air Force Staff Sgt. Richard Journagin, 1st Fighter Wing Munitions Flight crew chief, discusses the GBU-31 bomb with NASCAR driver Ricky Stenhouse, Jr., during a tour of Langley Air Force Base, Va., April 26, 2012. Stenhouse also participated in a military appreciation barbecue by signing autographs and talking with troops. (U.S. Air Force photo by Senior Airman Wesley Farnsworth/Released)