There are plenty of UFO documentaries, but this one tells it straight, in good chronological order, gets to the issues, and as such is an indispensible introduction to the subject. The testimonies of Jesse Marcel and Philip J. Corso are especially compelling because they were military brass who kept their secrecy oaths until near the end of their lives. Former Astronaut and moonwalker Edgar Mitchell is convinced extraterrestrial intelligences are visiting our planetary system