Approaching Infinity said:I'd say we'd have to look at a couple possibilities: 1) second shooter, 2) same shooter, but from a slightly different shooting position, e.g. further back in the room, away from the window, or through a different window.
And in 1), the other shooter(s) could be firing from different buildings. Of the 4 hotels looking out onto the Village concert venue, the Luxor (pyramid) has the best vantage point. According to police scanner audio, that hotel was evacuated due to a bomb alert called in at the time of the shooting. The Tropicana hotel was also on lock-down, in that case due to an 'active shooter', also reported on police scanner audio. In fact, active shooters were reported at four hotels other than the Mandalay.