Sept. 16, 1952; Portland, Maine. 6:22 p.m.  Witnesses:  crew of
       U.S. Navy P2V Neptune patrol plane, visually and via radar.  A
       group of five lights was seen at the same time a long, thin blip
       was being tracked on radar.  Note:  consideration was given to
       this being USAF KC-97 airplanes involved in a refueling
       operation.  The sighting involved 20 minutes.