U.S. Army To Develop A High-Altitude Spy And Jamming Sensor

"Its purpose would be to fly over enemy territory, provide data to allied forces and even jam or disrupt enemy capability.

The system is dubbed High-Altitude Extended-Range Long Endurance Intelligence Observation System, or HELEIOS (not to be confused with the HELIOS laser) and is part of the US Army’s wider Multidomain Sensing System family."

https://southfront.org/us-high-altitude-spy-and-jamming-sensor/