the united states air national guard has about 107,100 men and women in service. like the air force reserve command (afrc), the ang is often described as a "reserve" force of "part-time airmen," although the demands of maintaining modern aircraft mean that many afrc and ang members work full-time, either as full-time air reserve technicians (art) or active guard and reserve (agr) personnel. even traditional part-time air guardsmen, especially pilots, navigators/combat systems officers, air battle managers and enlisted aircrew, often serve 100 or more man-days annually. as such, the concept of air national guard service as representing only "one weekend a month and two weeks a year" is not necessarily valid.