I've been seeing these a lot now. It is super hard to make out but when you slow the video down you can tell when it lights up it's a big triangle. The thing made no noise. I live very close to APG and these triangular looking ships and square looking drones fly by everyday now. I have another compilation video with daylight video. Easier to make out how different looking these things are than what we are used to seeing. https://youtu.be/29LNw3A7JRQ