I don't know how much the world is going to second guess those guys. Apparently the military has already let them pass without a court martial. There is a realization that bad things can happen and it is quite clear that these two did all that they could to ensure safety before they opened fire.

What the world will second guess is the cover up. The government that denied existance of any such film and lied to the families about it. The sin was not in the shooting, the sin was in the lying and deception to the Hull family.