U.S. Government UFO Document:

“SUBJECT: Unidentified Flying Objects (UFO)”

(HEADQUARTERS 90TH STRATEGIC MISSILE WING, UNITED STATES AIR FORCE, FRANCIS E. WARREN AIR FORCE BASE, WYOMING)

(The UFO Chronicles, 10 October 2012)

UFOs were sighted over the Cheyenne, Wyoming area on the 
nights of 31 July, 1 August and 2 August 1965, according to the 
F. E. Warren AFB document (letter):

http://www.theufochronicles.com/2012/10/ufo-activity-results-in-nuclear-missile.html

The document was presented by The UFO Chronicles on 9 October 2012 (Headline: UFO Activity Results in Nuclear Missile Sites Being Put On Alert; Reports Pour in From Launch Control Facilities | UFO & NUKES).

“Cheyenne, Wyoming” (City-Data.com):

http://www.city-data.com/city/Cheyenne-Wyoming.html

Map of Cheyenne, Wyoming (city-data.com)

(city-data.com photo)