Some folks at FF '18 had a small squadron of planes with led strips glowing nicely. Most of the exposures took around 3 minutes, and resulted in some nice wallpaper.
Link
I know it says vids but most of the time there is only 1.7 seconds of awesome in my 13 minute vids, so I screen cap these moments. If anyone else wants to post there stills please do. They must be awesome or interesting and include an aircraft in shot. Like the following examples. Perhaps...