For a second weekend in a row, there’s been a helicopter lift at the Hyatt Regency Chicago’s east tower (201 East Wacker Drive). A construction worker tells us it’s more HVAC equipment being installed on the roof.

Since people really liked the video we posted last week of the helicopter lift from February 10th, here’s a video of the one from the 17th. I know shooting videos vertically is a sign that you have no idea what you’re doing (videos should be shot horizontally to match your eye’s natural aspect ratio), but in this case the subject was vertical, so it seemed to make sense.