4 minutes read South Dakota Sightings 1977: UFO Incident at USAF Missile Base Published: April 8, 2013 | Updated: January 18, 2026 0 THINK ABOUTIT UFO SIGHTING REPORT Date: November 16, 1977 Sighting Time: 20:59 Day/Night: Night Location: About 7 miles southwest of Nisland, South Dakota. Urban or Rural: USAF... Read the File Read more about 1977: UFO Incident at USAF Missile Base
