170411-F-ST721-028
Senior Master Sgt. Robert Reyes, 68th Airlift Squadron flight engineer, gives members of the Air Force Scientific Advisory Board a tour of a C-5M Super Galaxy aircraft April 11, 2017 at Joint Base San Antonio-Lackland, Texas. The SAB is a Federal Advisory Committee that provides independent advice on matters of science and technology relating to the Air Force mission, reporting directly to the Secretary of the Air Force and the Chief of Staff of the Air Force. (U.S. Air Force photo by Benjamin Faske)