There it goes again.
The sound of a helicopter flying in and around the tall buildings of downtown Minneapolis.
Folks heard it earlier this month, and it was back again on Sunday morning.
It was nothing suspicious, like a Chinese spy balloon.
Just pretty darn loud.
It was a low-flying chopper used to haul parts of a new heating and cooling system to the top of the US Bank Plaza building.
The 541-foot skyscraper sits in downtown Minneapolis next to the Hennepin County Government Center and Capella Tower.
Some sidewalks and streets around the building were closed, but it was pretty easy to hear and see the chopper from a distance.
The FAA worked with the city's public works department and Metro Transit on safety measures.