The security guard was alone, but just for a few minutes. Officers arrived “on the 32nd floor” within 15 minutes of the first shots, but WHERE on the 32nd floor. If you’ve stayed in Vegas you know each floor has multiple wings and very long hallways.
The guns and ammo in the room were “sales samples”. My theory is that Paddock has been selling illegal weapons to bad hombres for years and laundering his cash sales through real estate and gambling.
Follow the money.