nationalist. the protocol here in el paso is to wait for three officers and those three officers then go in to try to neutralize the threat. we do not know at this point when three officers arrived, when they went in or even if anybody went in. police went into the walmart or interacted with the shooter beep do kn -- we do know, which we learned today, some 24 minutes after the officer april riefrrived, the ss able to leave and give himself up to a motorcycle officer on the periphery. >> the most significant, as soon as they speak, they're on the record. if they change the story a day later, someone is going to say you have to change the story. first you have to interview all the officers. if their story don't correspond, you have to reinterview them.