Just a quick tip for anyone who actively looks for various objects in the sky. Not everything you see that's classified as a UFO is necessarily from anywhere off planet. Don't forget that the various high tech governments of the world have been experimenting with some very sophisticated aerial devices that can easily be mistaken for something from 'Out There'.
My belief after years of following these things, and having worked for Uncle Sam in some highly classified areas, is that about 99% of what you see that's Unidentified...are probably ours (or some other countries).
How you can absolutely tell the difference.....You can't. Unless Grok and Kraznotz come out and shake your hand or invite you to take a quick spin around Alpha Centauri with them.
Yes, they're unidentified, yes they're flying, but not necessarily from the great void of space.
Have fun
Jim
Listen to them - the children of the night. What music they make - Bram Stoker's Dracula