He's joining the military and being trained for combat and think most people with common sense can understand why mommy interventions are frowned upon. Maybe the lesson in all this is for the son to learn to stand on his own and take charge of his own life. I wouldn't say the sergeant is a jerk (his job is not to be be nice but to teach the young man to survive combat not be an interior decorator) nor do I think the son is selfish (his life is about to change completely as he enters a new world of sorts). He is justifiably mortified....and he will get over it. And so will so parkercp who had the best of intentions. At the end of the day it is a bump in the road.