Another category of Air Force Reservists serving full-time are those in the Air Reserve Technician Program (ART). ARTs are accessed from either the active duty Regular Air Force, the AGR program, Traditional Guardsmen (TG) in the Air National Guard, or TRs in the Air Force Reserve. ARTs carry a dual status, working for the Air Force as both full-time civil service employees and as uniformed military members in the same AFRC units where they work as Department of the Air Force Civilians (DAFC), performing the same job duties. Although "technically" civil servants part of the time, all ART officers must maintain a reserve commission on the Reserve Active Status List (RASL) as a TR and all ART enlisted personnel must maintain a current reserve enlistment as a TR as a precondition for both hiring and continued career employment as an ART. In addition, all ART officers and ART enlisted personnel wear their uniforms and utilize their rank titles at all times when on duty, regardless if they are in a DAFC status or in a drilling or active duty military status. Most ART personnel are assigned to operational AFRC flying wings, groups and squadrons in various operational flying, aircraft maintenance and other support positions and functions, up to and including wing commander. Because ARTs are not eligible for DAFC retirement until reaching age 60, and because a condition of their employment as an ART is contingent upon their maintaining an active reserve military status until reaching age 60, ARTs are not subject to the same maximum years of service limitations by pay grade that impact non-ART personnel. As such, ART personnel are permitted to remain in uniform until age 60, typically past a point that would otherwise require their retirement from military service based on rank, pay grade and years of service. Traditional Reservists (TR) are categorized by several criteria in either the Ready Reserve, Standby Reserve, Individual Ready Reserve or Retired Reserve: Ready Reserve Approximately 74,000 trained personnel who may be recalled to Active Duty to augment active forces in time of war, contingency operations, or other national emergency. This category also includes all full-time ART personnel. They are predominantly assigned to the Unit Program or as IMAs. Standby Reserve Includes Reservists whose civilian jobs are considered key to national defense or who have temporary disability or personal hardship. Most do not train, are not assigned to units and