This footage uploaded by the user syreeves was shot from the 28th floor of the Wells Fargo Building on 90 S. and 7th St. “Yep, that’s the view outside my window,” he says:
Syreeves described the activity as three helicopters in single file that “climbed to a hover over the building, held it for about 10 seconds apiece and then took off down Marquette Ave.” This video shows the helicopters flying around the Hennepin Avenue Bridge:
Here’s a video from the same location uploaded by the same YouTube user — G20Detainee — that shows the helicopters flying more in formation: