Invasion Force was released in the year 1980。Invasion Force is also called as Hangar 18, Space Connection, Geheimsache Hangar 18。

Shortly after the launch of a satellite from a space shuttle the satellite collides with an UFO in front of the crew's eyes. Because of an election campain some politicians try to hide the crashed UFO -- inside hangar 18.

Invasion Force actors and actresses include Darren McGavin, Pamela Bellwood, Stuart Pankin, Tom Hallick。