What does a sniper think when he's shooting a 17 year old Iraqi boy in the face? Does he think about that 17 year old boy getting up feeding his little brother and baby sister before he went out to do what he had to do for the day, or is he trained not to think about those types of things, not to let them cross his mind. The military can condition normal people into cold-blooded killers. Why can't certain cultures and upbringings do the same?