Original U.S. Air Force flight records belonging to Captain Donald Lewis Engebretsen, documenting his career flight hours as of March 1973, including a cumulative total of 471.8 combat and combat-support flying hours. Such individual flight record forms tracked every sortie a USAF pilot flew, from initial training through combat deployment and later instructor duty, as seen here in T-38 training sorties flown at Columbus Air Force Base, Mississippi. Project: 218969