The Air Force Reserve Officer Training Corps (AFROTC) is one of the three primary commissioning sources for officers in the United States Air Force and United States Space Force, the other two being the United States Air Force Academy (USAFA) and Air Force Officer Training School (OTS). A subordinate command of the Air University within the Air Education and Training Command (AETC), AFROTC is aligned under the Jeanne M. Holm Center for Officer Accessions and Citizen Development at Maxwell AFB, Alabama. The Holm Center, formerly known as the Air Force Officer Accession and Training Schools (AFOATS), retains direct responsibility for both AFROTC and OTS. AFROTC is the largest and oldest source of commissioned officers for the U.S. Air Force. AFROTC's stated mission is to produce quality leaders for the U.S. Air Force. AFROTC units are located on 145 college and university campuses with 1100+ additional institutions of higher learning participating in cross-town agreements that allow their students to attend AFROTC classes at a nearby "host" college or university. According to AFROTC HQ, in 2006, AFROTC commissioned 2,083 USAF Second Lieutenants, with AFROTC enrollment ranging from 23,605 in 1985 to 10,231 in 1993, and around 13,000 enrolled today. AFROTC units at colleges and universities are called "detachments," and are headed by an active duty USAF officer in the rank of colonel or lieutenant colonel who functions as both the Detachment Commander for USAF purposes and with the nominal title of professor of aerospace studies (PAS) within the institution's academic community. Most colleges and universities will designate the AFROTC detachment as the Department of Aerospace Studies. Depending on the detachment size, the PAS is typically assisted by one to four assistant professors of aerospace studies (APAS), also all active-duty USAF officers. Most APAS hold the rank of captain; however, some are also first lieutenants or majors. Approximately three USAF non-commissioned officers and one senior non-commissioned officer will typically provide military administrative support and are often augmented by one to two civilian staff support employees of the academic institution. Larger detachments may also have a Lieutenant Colonel serve as a vice commander. Within AFROTC detachments, the students (referred to as "cadets") are organized into wings, groups, squadrons, and flights, mirroring the USAF functional wing structure. The AFROTC detachment's cadet wing or cadet group is separated into two divisions: the General Military Course (GMC) consisting of the first two years of training, and the