Officer David Newton from the Las Vegas Police Department’s K-9 unit said he noticed a note on the shooter’s nightstand once officers breached the room. He said the note was located near one of the windows that Paddock had smashed with a hammer to fire onto the crowd below with high-powered semi-automatic rifles outfitted to increase their rate of fire.

“I could see on it he had written the distance, the elevation he was on, the drop of what his bullet was gonna be for the crowd,” Newton said. “So he had that written down and figured out so he would know where to shoot to hit his targets from there.”