That's the point I made too. They weren't given the order to take him alive or they would have through self-sacrafice and it wouldn't have been the first time.
They killed 1 guy that was armed the rest were unarmed. I wonder what the hell that was all about personally. I wonder if it really was a kill mission to begin with. Then again I'm not a SEAL hell I haven't ever been in a high stress situation so I should not be throwing my opinion around. Regardless he is dead.