My theory is that these UFOs aren't physical but are projections from elsewhere, literally like a TV projector. If two sources direct waves at the same location

My theory is that these UFOs aren't physical but are projections from elsewhere, literally like a TV projector. If two sources direct waves at the same location correctly, perhaps the interference can make the air molecules emit light like ships? Some audio advertising is starting to do this with sound waves (https://en.m.wikipedia.org/wiki/Sound_from_ultrasound https://en.m.wikipedia.org/wiki/Sound_from_ultrasound). These projected ships would look like they could defy physics with how they fly. Are these UFO sightings always over water? Maybe there's some submarine source?