As a retired Marine I know well that there are enemies within our ranks. He will be dealt with in a Marine like Manner, I trust you.
Keep your friends close and your enemies even closer.
Whoever does not have the stomach for this fight, let him depart. Give him his money to speed his departure since we wish not to die in this mans company. Whoever lives past today and comes home safely will rouse himself every year on this day, show his neighbor his scars, and tell him embellished stories of all their great feats of battle. These stories he will teach his son and from this day until the end of the world we shall be remembered. We few, we happy few, we band of brothers; for whoever has shed his blood with me shall be my brother. And those men afraid to go will think themselves lesser men as they hear of how we fought and died together.
I agree that one should be able to trust a Marine by default.
However, we do have this example, and...Scott Ritter...:(