(a) Certificate in lieu (CIL). A certificate issued in lieu of a lost or destroyed certificate of service, discharge, or retirement.
(b) Service person. One who:
(1) Is currently serving as a member of the Air Force; or
(2) Formerly served in the active military service as a member of the Air Force and all military affiliation was terminated after September 25, 1947.
(c) Surviving spouse. A survivor who was legally married to a member of the service at the time of the member's death.
(d) Guardian. A person or group of persons legally placed in charge of the affairs of a service member adjudicated mentally incompetent.