Mr. Paddock is the only person who appears throughout, the Waldo whose distinctive frame and faintly lopsided gait our eyes quickly learn to seek out in every frame. As they take the service elevator upstairs, Mr. Paddock chats with them. Mandalay Bay employees are virtually the only people with whom Mr. Paddock interacts in the surveillance footage. Mr. Paddock pauses to let them off, then gets on. He is on his way upstairs, where his guns await.

Source: New York Times March 22, 2018 10:18 UTC