A sky watcher who often catches UFOs on camera filmed a lightning storm in Corsica the other day and was lucky enough to catch some strange balls of light:
09/08/16 - That night was my last night in Corsica, just before the end of vacations. A beautiful thunderstorm surprised tourists, around 21 : 00 pm. A lot of people gathered to witness the huge lightning bolts crossing the dark sky. As the house I rented was close to this nice place, I quickly took my camera and tried to catch a few lightning strikes. I sat down and put my elbows on my knees to be as stable as possible. I was not looking at the screen while recording, fortunately: I noticed strange lights falling down the sky just after the lightning twice.
This witness does not believe it's "ball lightning," a natural but still somewhat mysterious phenomenon to scientists, but instead believes these objects are being affected by the lightning (versus created by it). What do you think?