sentences:  Both aircrew and support personnel were extended there in the summer of 1979 during the Nicaraguan crisis.The unit was awarded the Armed Forces Expeditionary Streamer for combat duty as a part of Operation Just Cause during 1989–1990.Tactical Air Command began retiring the A-7D in the late 1980s, with units being transitioned from the A-7D/K to the F-16C/D block 30.