BARKSDALE AIR FORCE BASE --   William Avants (right), 307th Operation Support Squadron range operations officer, briefs William Spacy II (left) and Roberto Guerrero (center), both from Air Force Office of the Assistant Secretary of the Air Force for Installations, Environment and Energy, about the boundaries of Claiborne Range near Alexandria, La., June 21, 2017. Col. Claiborne Range provides aircrews the opportunity to receive real time Electronic Countermeasure Training and also acts as a conventional bombing, exercise and target range for all branches of the military. (U.S. Air Force photo by Staff Sgt. Jason McCasland/Released)