at Columbus AFB, Mississippi; the 47th Flying Training Wing (47 FTW) at Laughlin AFB, Texas; and the 71st Flying Training Wing (71 FTW) at Vance AFB, Oklahoma. A final pilot training option is the rotary-wing and tilt-rotor track via Undergraduate Helicopter Pilot Training (UHT) with the 23d Flying Training Squadron (23 FTS) at Fort Rucker, Alabama. Combat Systems Officers, formerly known as Navigators, will receive their undergraduate CSO flight training with AETC's 479th Flying Training Group (479 FTG), a tenant USAF organization at Naval Air Station Pensacola, Florida. Aeronautically rated candidates will be notified of their rated selection or denial during their second semester of their junior year. Base assignments, including ENJJPT assignment, will be given midway through their first semester of the last year in college. Those cadets who were selected for rated slots are then allowed to wear a flight suit during specified LLABs where the Airman Battle Uniform (ABU) or the woodland camouflage Battle Dress Uniform (BDU) is the Uniform of the Day, unless otherwise noted by the Cadet Wing Commander or Cadet Group Commander. Once selected, pilot-selected cadets will contract with the USAF for 10 years of active duty USAF service following completion of flight training, nav/CSO-selected and ABM-selected cadets will contract for 6 years of active duty following flight training, while cadets in all other AFSCs will contract for four years after commissioning. Pilot candidates also undergo a Flying Class I physical and navigator/CSO candidates a Flying Class IA physical during the first semester of their last year. These are the most stringent physical exams given by the USAF. ABM candidates will undergo a Flying Class III physical exam. If a cadet with a rated slot is unable to pass their flight physical, they will instead be assigned to a non-rated career field. Flight Indoctrination Program (FIP) Prior to 1991, AFROTC also conducted a Flight Instruction Program (FIP) parallel to the Pilot Indoctrination Program (PIP) at USAFA. Although often touted as a means for AFROTC cadets to earn a free FAA Private Pilot Certificate while in college, the actual intent of the program was to provide an additional flight training screening process for prospective USAF pilot candidates who had no prior flight experience. In AFROTC, FIP consisted of two blocks, the first being a private pilot ground school course taught by an aeronautically rated USAF officer assigned to the AFROTC detachment's cadre. The ground school