SID - Acronym for Space Intruder Detector, an orbiting satellite with white and red striping that scanned the vastness of space for incoming alien spacecraft on the British syndicated sci-fi series U.F.O./SYN/1972. SID transmitted its findings to S.H.A.D.O. (Supreme Headquarters, Alien Defense Organization), a multi-nation alien defense complex with secret bases on Earth and the lunar landscape. The voice of S.I.D. was provided by BBC newscaster Nel Oxley. On the adventure series KNIGHT RIDER/NBC/1982-86 the term SID referred to Satellite Infiltration Drone, a bugging device created by Bonnie Barstow (Patricia McPherson) to be used by KITT, the supercar to get into places its automotive body could not access.