He was going back and forth between two windows and two gun mounts. The Leo’s knew where he was exactly in 15 minutes. It’s on the scanner traffic. Room and all. But at first they had no clue.
This is a cab driver on ground level as it unfolds.
https://www.youtube.com/watch?v=VO92rCrP8hQ&feature=youtu.be
I listened to the first 5-6 audio reports on the LVPD scanner. Within the first minute a cop reported the gunfire was coming the Mandalay Bay Hotel, half way up. The knocked out windows and smoke alarm activation would have confirmed and pinpointed the exact room.
It’s a long time before SWAT storms that hotel room.