U.S. Air Force Gen. Herbert “Hawk” Carlisle, commander of Air Combat Command, taxis through fire trucks’ streams in an F-15C Eagle during his final flight at Joint Base Langley-Eustis, Va., March 9, 2017. The fini-flight is an Air Force tradition, dating back to World War II, that celebrates a pilot’s military career. (U.S. Air Force photo/SSgt. Natasha Stannard)