The Marine in question, the day before, had seen another Marine in his unit killed by a booby trap hidden in the clothing of a dead Iraqi. If you've never been in a war, and I gather you have not, I wouldn't be so quick to judge the actions of soldiers on the ground, facing conditions you know nothing about.
Oh, ok, so that means he can blow away 5 year old children, whole familys, and non-combatants then? F you pal! He signed up for war and killing, and if he cracked then it's is too bad! There is NO EXCUSE for this! Your whole story is a lie, so please just go away.