Pulitzer Prize-winning historian Gordon S.

(CNN) - Security camera footage obtained exclusively by CNN shows Connor Betts' movements on the night of the Dayton gunman's mass shooting. Connor Betts, 24, does not stand out; he is dressed like others at the bar in T-shirt, shorts and sneakers. The footage shows Connor Betts walking in first, being carded and getting a wristband, then waiting for the two others to enter. Dayton police said Monday that they have talked to the friend and said there is no information to suggest he or Betts' sister were aware that Connor Betts had weapons. Employees of the bar say they saw Betts at the bar earlier the night of the shooting, as well as on Friday night.