concern, crowd size. >> when we were in the off stage announce area tent behind the stage, he was very concerned about the shot. >> usa! usa! >> for the pictures that were shared, he wanted to make sure that the rally space was full. so he's being told it's not that people are waiting to get through these mags, through these metal detectors, people don't want to go through them because they have weapons with them. >> during the hearings, the select committee showed a secret service report that quote, some members of the crowd are wearing ballistic helmets, body armor and carrying radio equipment and military grade backpacks. >> let's listen. >> the committee also played police radio transmissions from that day. >> an individual was entering. he's got blue jeans, a blue jean jacket and underneath the blue