Stealth just means the plane can get closer before a sensor can detect it or get a firing solution. It doesn’t mean it’s invisible. The IR video looks pretty close to the plane considering you can make out what plane it is just by the shape. Probably US intelligence didn’t know about this sensor and would have flown around it/attempted to destroy it if they had known.

I miss being able to play Rivals of Aether 2 with a GameCube controller. My to my knowledge there’s no good way to connect one on Linux.