UFO Case Report (E-mail):
“Subject: April 15, 1966,
F. E. Warren AFB, WY, UFO over missile silo”,
3 October 2006 (NICAP.org)
F. E. Warren Air Force Base personnel sighted 8 UFOs over the Minuteman ICBM complex on 15 April 1966, at 11:00 p.m.:
http://www.nicap.org/fewarren660415dir.htm
NORAD confirmed that 8 unknown objects manoeuvred over the ICBM complex, according to this UFO sighting report.
Satellite photo of F. E. Warren Air Force Base,
Cheyenne, Wyoming (wikimedia.org photo)