June 2001
(National Institute for Discovery Science, Las Vegas, Nevada)
http://web.archive.org/web/20061211153900/http://nidsci.org/pdf/triangularcraftdatabases.pdf
(u2.lege.net image)
UFO Report: “Comparison of Unidentified Triangular or Deltoid Aircraft Location Patterns in Three Independent UFO Databases: NIDS, MUFON and Larry Hatch”