While anonymous federal agents have thrown protesters into unmarked vans and fired tear gas at Portland’s mayor in recent days, an Air Force surveillance plane designed to carry state-of-the-art sensors typically reserved for war zones has circled the Oregon city’s outskirts from above.

The plane, a DO-328 “Cougar,” was spotted via the open source flight tracking website ADS-B Exchange, allowing the public to monitor its course. The Intercept reviewed this flight data, confirming tight, circular flights consistent with surveillance operations in and around Portland.

The aircraft is a twin-engine plane built in a modular fashion that allows it to be outfitted with long-range surveillance equipment suitable for supporting U.S. Special Operations commandos on the ground, according to Air Force documentation and previous public reporting. It was in Colorado earlier this month, looping over Denver and Boulder, before flying to Portland on July 19, and has been circling above Portland and its suburbs […]