Texas in a cooperative arrangement between AETC and the Naval Air Training Command / Chief of Naval Air Training (CNATRA). These USAF students received instruction from a combination of USN, USAF, USMC and USCG flight instructors with Training Air Wing FOUR at NAS Corpus Christi. This program was discontinued in 2012 and all USAF student pilots slated for the C-130 and its variants now train in the T-1A at one of the three SUPT bases. NOTE: The 55th Wing's (55 WG) E-4B National Air Operations Center (NAOC) aircraft and any of the Special Air Mission (SAM) aircraft operated by the 89th Airlift Wing (89 AW), e.g., VC-25/Air Force One, C-32, C-40, etc., are not options for new graduates of the Airlift/Tanker track. Prospective E-4 and VC-25/C-32/C-40 pilots must be qualified in an airlift, tanker, or other intelligence, surveillance and reconnaissance (ISR) aircraft before applying to fly the E-4 or any SAM aircraft. Advanced Training – Helicopter (SUPT only) Those selected to fly helicopters or tilt-rotor aircraft are assigned after completion of the primary phase to AETC's 23d Flying Training Squadron at Fort Rucker, Alabama to train in the TH-1H Huey. Graduates will fly the UH-1N Twin Huey, HH-60G Pave Hawk or CV-22 Osprey. Combat Systems Officer Training Undergraduate Combat Systems Officer Training – UCSOT Previously known as Navigators, the training pipeline for Combat Systems Officers has seen significant change since AETC's establishment. When AETC was first activated to replace Air Training Command (ATC), it inherited ATC's modernization effort of navigator training in the midst of a BRAC-directed closure of Mather AFB, California and the inactivation of its 323d Flying Training Wing, USAF's sole Undergraduate Navigator Training (UNT) wing, which also provided advanced training for USN Student Naval Flight Officers destined for land-based naval aircraft (e.g., P-3 Orion, E-6 Mercury, etc.) under the dual-designation of Interservice Undergraduate Navigator Training (IUNT). As part of this transition, AETC opted to implement a dual training track whereby most USAF and all land-based USN and NATO/Allied officer student navigator training would transition to the 12th Flying Training Wing (12 FTW) at Randolph AFB, Texas utilizing the T45 navigation simulator and flying the T-43 Bobcat (both relocated from Mather AFB) and adding the T-1 Jayhawk for USAF students. The relocated programs were renamed Specialized Undergraduate Navigator Training (SUNT) for USAF and USAF-sponsored NATO/Allied students, and Joint Specialized Undergraduate Navigator Training (JSUNT) for USN and USN-sponsored NATO/Allied