So here’s the thing; absent a tracer round, it’s just really, really hard to see supersonic bullets in flight, even in daylight. Knowing what angle they’re at at night, sorry, no.
There is still something troubling here. In every video I have seen all the windows in the area of room 135 on floor 32 are dark. I have yet to see a muzzle flash. Not one. If he was “back in the room” the entire room should light up. If he shot through cans, where are the cans? No “muzzle flash suppressor” removes the flash from down range. They may diminish it a bit at perpendicular angles in low light but seems to me there should be ONE video of muzzle flashes fro that room.
So where is the video of the concert, in real time, showing what was happening when the shooting started? I’m betting the song was patriotic or some words were said that initiated the shooting. Have never seen that sequence. Curious...