Col. David Enfield, 433rd Mission Support Group commander, gives a 433rd Airlift Wing mission brief to members of the Air Force Scientific Advisory Board 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)