Here’s one interesting video of an unknown lights in triangle formation hovering in the sky above DeLand in Florida. This was filmed on 29th August 2016.
Witness report: This thing flew by me from the south.made a loop and went back to the south… If you can blow up the video I could see it as a triangle. Went outside to dump trash notice the blinking lights flying from the south at a very high altitude then when they came back went back inside… Came back outside to smoke a cigarette about 5 to 10 minutes later the craft had circled around and was heading back south flying at a much lower altitude… The video was shot on an iPhone so you should be able to blow it up with my eye I could see that it was a triangle . I shot this video while I was outside smoking a cigarette .
Author (source: MUFON)