USN 1950-80

Before they all turned grey and boring.

Channelling The Final Countdown - so from IMDB comments:

Filmed during the Nimitz' Sep 1979-May 1980 cruise. Squadrons aboard the Nimitz at the time included:

VF-41 and VF-84 (F-14A Tomcats) AJ
VA-35 (A-6E Intruder)
VA-82 and VA-86 (A-7E Corsair II)
VFP-63 (RF-8G Crusader)
VAQ-134 (EA-6B Prowler) - no decals!
VS-24 (S-3A Viking)
VAW-112 (E-2B Hawkeye) - no decals!
HS-9 (SH-3H Sea King).

All squadrons get time on film. Other Navy aircraft types briefly seen include a North American/Rockwell RA-5C Vigilante when Lasky's helicopter is taking off in the movie's beginning (Tailcode code "GJ" is visible on it, which designates it as assigned to Reconnaissance Heavy Attack Squadron Three (RVAH-3) operating out of Naval Air Station Key West, Florida) and an F-4 Phantom II is on the Nimitz' flight deck when the Crusader is recovered following its reconnaissance mission (Markings can't be made out on it).