Obviously the kid had been coached by his parents to embarrass a military man.
Note the father's statement that "he asked a fair hard balled question".
I imagine knowing the men in my life that asking one of them in public was he raped might be an occasion that would cause incredible discomfort or downright violence whether he was or not.
And the father seemed to relish the asking that aquestion of a military man. Hmmm,,agenda.