AGM-114 HELLFIRE
Studies for a high-performance antitank missile began in 1974, coincidentally coinciding with the development of the AH-64 Apache attack helicopter. Actually the new missile was a direct descendant of the projected AGM-64 Hornet developed a few years earlier by North American Aviation but never entered service. However, this missile served as a test bed for different laser and electro-optical guidance systems of other bombs and missiles and directly in the terminal guidance system of what ended up being the AGM-114 Hellfire anti-tank missile.
HELLFIRE gallery and more info