im a big fan of hanging someone with his own rope.
'so you faked having a purple heart? thats okay, don't worry...no we won't imprison you or take it away, in fact you can keep it, but you'll be living up to your purple heart next week near Kandahar! lolol!'
lol harsh man.
Imagine the poor guy who forgot or didn't know he had one laying around. That would suck.