one of the terrorists lobbed a grenade. petry threw it back at the terrorists but it blue up as he did so and his hand was amputated on the spot. >> we threw multiple grenades. there was no good way to do it without completely exposing ourselves. >> reporter: all of the terrorist in this battle were killed by u.s. forces. the american survivor from that day all attested sergeant petry saved their lives. even as he lay wound with gunshot wounds to his leg and his hand blown off. he radios for help. private religion on and sergeants higgins have left the army to attend college. the married father of fewer