Why 4 Air Force stars cried after watching a movie

(1)KBS News
(2)The saddest thing after Q’s discharge is
(3)After I was discharged from the army
(4)The second movie, Top Gun Maverick, was released
(5)I watched it with my family and couldn’t wake up at the end of the movie
(6)My son asked me why I cried so much, and I answered a long time later
(7)Maverick’s still flying. Dad can’t fly anymore
(8)Even now, my heart trembles the most when I hear the sound of a plane or when a fighter is flying