Christians have faced much worse persecution than this... and managed to always turn the other cheek. Just sayin’.
Many, if not most of these cadets, are Christian and neither this action nor any other prevent the cadets from worshiping their God as they wish. But they aren’t all Christian and they don’t all worship God or anything else. They are there to learn leadership skills and character, and it doesn’t take a Christian to be a leader of character. There is no reason to cloud their non-religious mission with proselytizing. It’s not a Christian institution, nor should it be.