THOR, which video did you see. In the one I watched a marine killed a terrorist that was an immediate threat to him and his companions. One of their number had been killed the day before by a booby trapped body.
If you saw the unedited video, the other terrorist responded with the universal sign of surrender - hands up, palms out - and was NOT shot
Did your video have sound? The one I saw had the constant hammering of gunfire in the background ... they were in an extremely hostile environment and still got it right with both terrorists they encountered
So, shut your whiney self the F up
Couldn't have said it better myself.
These combattants were not yet prisoners - no blindfold, no cuffs, and still in the immediate theatre of battle.