If it's just one that's not particularly weird. There are really powerful lighting systems available now in packages small enough to be put on a cargo quad that

If it's just one that's not particularly weird. There are really powerful lighting systems available now in packages small enough to be put on a cargo quad that put out a LOT of light. On an octocopter like the Alta X or other cinema style drones they could stay up for a while just carrying the light. There's also some companies with tethered systems that could stay up indefinitely. A larger 'swarm' could be any number of even non defense companies testing. https://www.stratusleds.com/module https://www.stratusleds.com/module Stratus Light in action: https://www.youtube.com/watch?v=hvDXjC-_7uo https://www.youtube.com/watch?v=hvDXjC-_7uo AirMast: https://www.youtube.com/watch?v=nllC9LGnUMQ https://www.youtube.com/watch?v=nllC9LGnUMQ