An infrared light for active infrared illumination could appear dark red, but probably wouldn't on a military drone. It would probably filter out all visible fr

An infrared light for active infrared illumination could appear dark red, but probably wouldn't on a military drone. It would probably filter out all visible frequencies. Thanks for your account, these things will show up again if they are actively used. There's no question that such an aircraft could be built, I've been thinking about it myself. (Strong aviation interest).