At first I doubted this video because it doesn't have a time/date stamp so you figure it could have been taken anywhere on any date. But then I saw the Mandalay Bay to the right which would put this person recording this helicopter, it looks to be North-East behind the Mandalay Bay..? Which would make where the gunshot is pointing to exactly where the Harvest Festival was. And as far as date, we know it was before the tweet (Oct 12). So, with how many responding police & ambulances are shown in this video, which does not happen other than during a major incident, I'd have to say I'm pretty convinced that this guy actually recorded the 'real' shooter (at least one of them) of the Rt 91 mass shooting event.
A related video to take us all farther down the helicopter theory rabbit hole. https://steemit.com/dtube/@julzee/uy17n0rp
Source: https://mobile.twitter.com/GeorgiaDirtRoad/status/918529517332910081/video/1
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