The murderer's father replaced his grandson's cliches by demonstrating his psychic ability; here are a few examples: "they probably told him things"; "they might have said..."; "they might have told him, 'We'll getcha! We'll getcha!'"
This whole thing is sad, tragic, and evil. I understand the responses from the father and son; that doesn't mean I like what they said. This murderer deserves no excuses or hypothetical loop-holes.
CNN's Sanchez points out in the final seconds: "The guy has not had a stellar military record." Add this understatement next to Sgt. Russell's list of excuses and loop-holes.