White Sands Missile Range has developed a video tracker using a consumer grade personal computer and frame grabber. The video tracker receives NTSC video at a 60Hz field rate and delivers tracking data with a 32ms delay. Thirty video trackers have been fielded with great success tracking highly dynamic rockets and airplanes from launch with an azimuth slew rate of up to 60 degrees/second. Simple contrast tracking is employed for both initial launch and steady-state tracking. Smart region of interest determination is used to facilitate servo control issues.