I'm always somewhat skeptical about footage taken that is used as evidence to support sightings of ghosts and alien aircraft. Not because I don't believe in them, because I definitely do, but because they're way too easy to fake, and people sometimes use these images/videos to get money or to otherwise cause problems.
In the case of the first film, I would have said it was potentially a plexiglass shield put on poles outside the edges of the video footage, and the use of laser light pens in the various colors. The colors, the swiftness of motion, etc are all things that can be explained with a few simple gadgets. This changed when I was able to see the craft drop down, and it was clearly behind some of the buildings over which it had been hovering. That the people filming in video three were just presumably vacationing Americans taking footage to bring home, lends credence to the concept this was not staged (at least by them). I also think it was likely gunfire, and not the craft, that caused the light flashes. The craft takes off, but lights begin to show up in the blue and red, in other areas well above the range of the gunfire.
Pretty, and pretty amazing, footage.
As an aside, my step-father's mom became a believer when she saw a similar event in the region where I grew up. She doesn't believe in ghosts, but she does believe in UFOs now. Years after my mother told me about the event, I was watching a documentary about UFOs, and there was a mother/daughter pair that saw the same thing my step-grandmother had. They began to develop all kinds of illnesses, but previous to that evening, had not had any serious health problems.