In 1956 a domed, circular UFO landed close to US Highway 70 about 10 miles from Holloman AFB. Vehicles close to the area stalled and died. Traffic backed up on the highway. Several people witnessed this including two colonels and two sergeants. The ufo was on the ground about 10 minutes. It then took off with a whirring sound. The Pentagon and CIA along with Air Technical Intelligence investigated. There was never an explanation for this sighting.