In a weird back to the future and Cold War designation, the USAF have redesignated an Alaskan based aggressor squadron - the 18th Aggressor Squadron as the 18th Fighter Intercept Squadron.
https://www.twz.com/air/f-16-aggress...r-defense-unit
last time I can think of anything designated that was pre GUlf War, with the 57th FIS equipped with F-15C at Keflavik...
cheers