Our strange lights in the sky are not silent, in fact they are quite noisy.
US Border Patrol helicopters searching for illegals that have been seen or tripped sensors. Usually one at a time so no formation; the other night their were two doing a definite search pattern. I took a video that would make a convincing UFO video if it didn’t have the helicopter sound. The lights on the helicopter show up as colored circles on video.
Their were two = THERE I can’t believe I did that...