TCM Boston Label Copy: An early instance of an analog navigation and control device is the auto-pilot assembly developed for use in the Hawk Missile System by Raytheon in the late 1950's. The Hawk Missile is used in an air defense system against high speed, low altitude targets. During flight the assembly receives inputs such as acceleration, attitude, direction and distance to target. It then computes the necessary corrective signals to be sent to the wings control system. This control causes the missile to follow the most direct intercept path to its assigned target.