Sheeesh, give our soldiers a friggin break already. If the Iraqi "freedom fighters" didn't use tatics like booby trapping bodies, or blowing themselves up to take out an enemy, then we wouldn't have to make damn sure they were dead before we could consider them neutralized. WTF do you think happened at Iwo Jima in WW2? Same thing- the enemy is there to fight, and willing to die to take you out.
This Marine did the right thing- he perceived a threat from a known enemy, presumably willing to die for his cause, and he acted most prudently...the number one priority in a war is to get your bellybutton home in one piece.If anything this should be a training video on how to treat enemies willing to blow themselves up just to take you out.