"............What happened was this, the sheriff said: The security guard, Jesus Campos, had been alerted that a room on the 32nd floor had a door that had been held open for a long period of time. He found that the door to that floor from the stairwell had been barricaded, and he radioed in to report that at 9:59 p.m.
The mystery of Stephen Paddock gambler, real estate investor, mass killer
Campos, Lombardo said, then took the stairs to the 33rd floor, exited, walked to the elevators and took one back down to the 32nd floor. He was shot in the leg as he walked outside Paddocks door.
So subsequently you have a couple minutes of him going up, going down the elevators and back down the hallway and then he encounters the suspect, Lombardo said. He receives a wound, he attempts to go through his radio and then he also confirms his communication with dispatch via cellphone.
All of the timelines have shown that Paddock opened fire on the crowd at 10:05 p.m. What time did Campos report that he had been shot? Police have never said, and Lombardo didnt elaborate on that in the televised interview...."
http://www.latimes.com/nation/la-na-vegas-shooting-sheriff-20171102-story.html
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IIRC JC said he was on the 31st floor when he got the call about the door alarm. So he uses the stairwell to the 32nd floor but it's blocked, calls in, then continues using the stairwell to the 33rd floor, takes the elevator back down to the 32nd floor, As he's heading down the hallway in the area of the fire escape blocked door and room 32135, he gets shot at and then calls in a second time..
Well okay, if we voted on versions this one does seem somewhat more logical to me.