S1, EP6 "UFOs vs. Airliners"
Sightings of UFOs by commercial airliners.
S1, EP5 "UFO Crash Sites"
A piece of debris found at the Roswell crash site may shed new light on what happened in 1947.
S1, EP4 "Shoot 'Em Down"
True stories of fighter pilot encounters with unidentified flying objects in our skies.
S1, EP3 "Battle of Los Angeles"
An unknown flying object is spotted by thousands in 1942.
S1, EP2 "Black Triangles"
Triangular-shaped UFOs seen in the 1980s and 90s.
S1, EP1 "Red Alert"
UFO sightings over nuclear facilities trigger high-alert responses.