in the early 1990s, with the disestablishment of strategic air command (sac), tactical air command (tac) and military airlift command (mac) and their replacement with air combat command (acc) and air mobility command (amc), all air national guard units transitioned to the objective wing organization. most flying unit designations were simplified to "airlift" or "fighter" or "air refueling" or "rescue", with flying squadrons being assigned to operations groups. also, on 1 october 1994, in accordance with the usaf "one base-one wing" policy, all air national guard flying units previously designated as a "group" had their status changed to a "wing" no later than 1 october 1995. additionally, ang stations hosting flying units were re-designated as an "air national guard base" if they were not collocated on an active duty installation.