“10pm on the South Waterfront. These helicopters are …. (expletive) loud!” read one Reddit comment on Sunday night.

Another under the title “Helicopter South Waterfront/Johns Landing” read: “vibrating our windows for a couple hours now.”

To which a third person responded, “Its so annoying .. Over and over and over. Endless laps around the south waterfront. I can feel my tax dollars burning.”

Many people saw, heard or felt the helicopters and planes buzzing around Portland’s ICE field office south of downtown.

The droning hum and vibrations have generated more aircraft noise complaints to the city last weekend than in the entire fiscal year that ended in June.

So, who’s flying them? How long will they continue?

Here’s what we know:

They’re hard to miss.

The U.S. Immigration and Cust

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