UFOs For Real?

Like all things that sound crazy, careful consideration and "scientific" research of UFO visits to Earth's atmosphere is worth exploring.

A documentary that does just that (with interviews of presidents, Air Force pilots, generals, et al):
PART 1

PART 2

PART 3

PART 4

PART 5

PART 6

PART 7

PART 8

PART 9