The S.H.A.D.O. Mobiles are used by S.H.A.D.O. the Supreme Headquarters Alien Defence Organisation to defend Earth from alien invasion.
The Mobiles are all-purpose tracked vehicles which can transport personnel and equipment to a UFO landing site.
There are several versions of the Mobile including armed versions with machine guns and rocket launchers as well as a radar-equipped command center.
The series UFO was designed by Gerry and Sylvia Anderson and first broadcast in the UK in 1972.