Louisiana Congressional Staff Delegates visit Barksdale Air Force Base, La., and are given a tour of a B-52H Stratofortress Sep. 21, 2015. U.S. Air Force Col. Alan Rock, 307th Mission Support Group commander, greets the group of delegates at a B-52 Stratofortress to explain its mission and capabilities. (U.S. Air Force photo by Master Sgt. Dachelle Melville/Released)