I wonder how anyone knows who the Jews would be. Is there a list? Are they wearing badges?
Perhaps cook has been serving up ham hock soup with impunity?
sometimes the last name gives it away pretty easily. An evangelical revival probably broke out so they have to reign in the Christians.
Maybe the Jewish cadets attended religious services, held a Passover Seder, lit Chanukah candles, had Hebrew bibles, etc. Does the Air Force Academy have a Jewish students group and/or a Jewish chaplain?