you see several of them backing up. backing towards the helicopter. they do not turn their backs to the taliban. we also know that there was plenty of backup firepower out of sight but nearby. if things had gone wrong, there were other forces prepared to come in. >> speaking of that, chris, look, you're s.e.a.l. team 6, you know this intimately. is there anything you can see? first of all, can you tell who these men were? barbara has mentioned s.e.a.l. team 6, possibly army delta, suggestion maybe cia paramilitary. what can you read into what you witnessed on that tape? >> all three of those options would be fairly accurate. most of the cia operatives are made up of former delta force guys, s.e.a.l. team 6 guys as well. so it can be either one of those three groups. certainly, very, very correct. this was choreographed. they knew what they were doing. they got in, they got out. minimum time on the ground. there was two ac-130 gunships