29 Nov 1989 Sightings
Gendarme patrols near Eupen reported large, silent triangular objects with bright lights, starting months of similar reports across Belgium. On the night of 30-31 March 1990 the Belgian Air Force scrambled two F-16s after a radar contact; the pilots saw nothing and the object was never identified.
13 Mar 1997 Sightings
Many people across Arizona reported and videotaped bright lights in the night sky. In July 1997 the Maryland Air National Guard said its A-10 jets had dropped flares over a range southwest of Phoenix, though that does not account for every report. Former Gov. Fife Symington said in 2007 he saw it.
Dec 1981 Sightings
Residents of Norway's Hessdalen valley began reporting strange lights in December 1981, up to about 20 a week into 1984. Project Hessdalen ran an instrumented field study in 1984, and Ostfold University College set up an automatic measuring station in 1998. Their cause is still debated.
8 Jan 1981 Sightings
A man near Trans-en-Provence in southern France told gendarmes a craft had landed briefly on his property and left marks on the ground. Gendarmes took samples, and GEPAN analyzed the soil and plants in a 1983 technical note. It remains one of France's most discussed cases.