 Prior to the Patriot, Raytheon was involved in a number of surface to air missile programs, including FABMDS (Field Army Ballistic Missile Defense System), AADS-70 (Army Air-Defense System – 1970) and SAM-D (Surface-to-Air Missile – Development).In 1975, the SAM-D missile successfully engaged a drone at the White Sands Missile Range.During 1976, it was renamed the PATRIOT Air Defense Missile System.