Complex sentence: It was most recently part of the 49th Fighter Wing at Holloman Air Force Base, New Mexico, where it operated the McDonnell F-4 Phantom II aircraft, conducting training and air superiority missions.
Split into simpler sentences: It was most recently part of the 49th Fighter Wing at Holloman Air Force Base, New Mexico. It operated the F-4 Phantom II aircraft, conducting training and air superiority missions.