I think we just busted Greg Nicol, fellow citizens! Before I post the many images, here’s the gist of the bust.
Greg Nicol stood passively inside AGR 6 building, visible by his left elbow through the window of door 9, for at least 260 seconds (4 minutes 20 seconds), from no later than 6:09:02 to 6:13:22, before he opens door 9 slowly with this very elbow.
In the meantime, the first shots are fired ~110 seconds before, and multiple LEOs are seen urgently running across this side of AGR 6 and across this door.
At 6:13:24, Greg Nicol calmly finishes a conversation with someone else just behind the door and slowly turns his head out to the parking lot, and then poses a wide arms stance highlighting his gun on one side and acts a fake head scan northward (diametrically opposite to Crooks above) as if looking for danger or the shooter.
He clearly was by that door all along after having abandoned his sniper post; in that time he was just having a conversation (and his elbow in the video can be seen moving, it’s not a static illusive object) through all the shots; he did not in those 260 seconds let anyone in the building who was locked out as claimed in a timeline; his elbow did not seem to react to the shots; and then Greg Nicol played for the dashcam once he opened the door as if he were a LEO rather than an accomplice or a criminally negligent overwatch sniper.
The following screenshots are from the dashcam video provided by @reneroos, who was the one to spot Greg Nicol opening door 9.
I post multiple screenshots in this order: Just before he opens door, then when he is opening it, then when he poses as a concerned LEO; going backward, multiple images going back in time, showing the elbow through the door 9 window. The point of posting so many is to evidence the thesis.
But the evidence is much more compelling if you watch these minutes and check yourself that the shape of the elbow is moving slightly throughout (and everything else is static), so that this shape is not a static illusion; and if you check also that Greg Nicol opens the door with this very elbow.
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Just before Greg Nicol opens door 9, a left elbow is visible and a shaved head:
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Greg Nicol opening door 9 with his left elbow:
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Greg Nicol posing a fake LEO role of concern and danger - you’ve got to watch this bit of video to see how before the pose he’s still chatting and looking into AGR building:
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Now to see how long he had been having this conversation by door 9, let’s go back every 10 seconds before he started to open the door. Here T-10:
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Left elbow visible at T-20:
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Left elbow visible at T-30:
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Left elbow visible at T-30:
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Left elbow visible at T-40:
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Left elbow visible at T-50:
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Left elbow visible at T-60:
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Left elbow visible just after first three shots - no surprised reaction, no jerky elbow:
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Left elbow visible at T-120 - skipping farther back because the pattern is clear:
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Left elbow visible at T-180; ones sees a concerned LEO rushing across 70 seconds before first shot:
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Left elbow visible at T-240:
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Left elbow visible at T-260 - there is no earlier footage, as this is the moment the Butler Township Police cruiser has pulled in and just parked:
So for at least 260 seconds Greg Nicol stood just inside door 9 of AGR 6, apparently having a conversation, through the mad dash of local LEOs, through the crawling of Crooks just above him, through the local police officer who got boosted to corridor’s roof, through the 10 shots, through the aftermath for another ~110 seconds, to only then act for the camera in the role of LEO!!!
@reneroos - Credit goes to him for providing Dropbox dashcam video and recognizing Greg Nicol at door 9 of AGR just after he opened the door.