One of the most significant changes for Air Combat Command resulted from an overhaul of flying training responsibilities. Following its activation, ACC was responsible for aircraft-specific aircrew training, including initial weapon system and continuation training. On 1 July 1993, the 58th and 325th Fighter Wings—F-16 and F-15 training units transferred from ACC to Air Education and Training Command (AETC). Concurrently, Luke AFB, Arizona, and Tyndall AFB, Florida, for which those respective wings were the host units, also moved from ACC to AETC ownership. However, on 1 October 2012, both Tyndall AFB and the 325th Fighter Wing returned to the control of ACC.