Hoseshoe shaped

In the 1970's an unidentified craft was sighted over Bentonville Arkansas. It was horseshoe shaped, had red lights around it outside, stayed in the same place for hours. When my parents and uncle called in to report it they were told that people were calling from all over the area and they had no idea what it was. 
Three little red lights went up to it from 3 different areas, and when they got up to it, they seemed to be triangulated to it, it took off quickly. 
My parents who saw it along with one of my uncles never saw or heard anything about the object afterward.  My mother had never seen a UFO before, but her uncle worked at a base in Texas during the "Roswell Incident".  He told her about how coffins guarded men with machine guns were hauled through there and he was told not to talk about it. 
This, however, never affected her judgement on whether UFOs were real before this incident.  (She had a somewhat sceptical belief of aliens and UFOs)
Witness indicates that the date of the sighting is approximate.  PD