A U.S. Air Force crew chief signals the pilot to stop a U.S. Air Force B-1B Lancer aircraft during a Bomber Task Force deployment at Andersen Air Force Base, Guam, Oct. 21, 2020. Crew chiefs are tasked with ensuring the aircraft is mission ready by conducting day-to-day maintenance that includes diagnosing malfunctions, replacing components and detailed inspections. (U.S. Air Force photo by Staff Sgt. David Owsianka)