UFO Magazine Article:

“For years the Air Force has dismissed them as hoaxes, hallucinations or misidentifications. Now the Air Force’s own scientific consultant on unidentified flying objects declares that many of the sightings cannot be so easily explained.” by Dr. J. Allen Hynek, 17 December 1966

(The Saturday Evening Post (magazine), 
Indianapolis, Indiana)

The article was presented by The UFO Chronicles on 26 September 2012:

http://www.theufochronicles.com/2012/09/j-allen-hynek-reports-on-ufo-landing.html

Dr. J. Allen Hynek reports on a UFO landing that occurred near a nuclear missile site in North Dakota on 25 August 1966. According to Hynek, a U.S. Air Force “Strike Team” was ordered to intercept the unknown object.

2 UFOs were sighted by U.S. Air Force guards and confirmed by radar.

Dr. J. Allen Hynek, Astronomer, 
the U.S. Air Force's Scientific Consultant 
on UFOs (1948-1969), 
UFO Author, Lecturer & Researcher 
(4.bp.blogspot.com photo)

UFO Paper:

“NCP-11: Do Nuclear Facilities Attract UFOs?”

by Donald A. Johnson, Ph.D.

(Nuclear Connection Project, NICAP.org)

A good percentage of the UFO incidents that have occurred 
over U.S. nuclear facilities have taken place at highly restricted 
U.S. Government research and production facilities, such as 
Los Alamos, Oak Ridge, Hanford AEC and Savannah River AEC, 
Donald A. Johnson informs:

http://www.nicap.org/ncp/ncp-johnson1.htm

Wikipedia article: “Nuclear power in the United States”:

http://en.wikipedia.org/wiki/Nuclear_power_in_the_United_States

Wikipedia article (Excerpt): “List of nuclear reactors: 
United States of America”:

https://en.wikipedia.org/wiki/List_of_nuclear_reactors#United_States

Los Alamos National Laboratory, Los Alamos, New Mexico

(wikimedia.org photo) (wikimedia.org)

UFO News Article:

“Viewers Include Police – UFO Reports Multiply;

Many Sightings Over Toledo Area”,

28 March 1966 (The Blade, Toledo, Ohio)

The article reports on the March 1966 UFO activity over South-Eastern Michigan, North-Western Ohio and Wisconsin:

http://news.google.com/newspapers?id=eCYxAAAAIBAJ&sjid=jQEEAAAAIBAJ&pg=7207,2115181&

Quote from the article:

“Later, the Monroe County, Michigan sheriff’s department 
received calls from nearly a dozen persons who said that they 
saw red, white, and green flashing objects over Lake Erie, the 
Enrico Fermi Atomic Power Plant, and other areas near Monroe.”

“Toledo, Ohio” (City-Data.com):

http://www.city-data.com/city/Toledo-Ohio.html

“Monroe, Michigan” (City-Data.com):

http://www.city-data.com/city/Monroe-Michigan.html

Wikipedia article: “Enrico Fermi Nuclear Generating Station”:

http://en.wikipedia.org/wiki/Enrico_Fermi_Nuclear_Generating_Station

Aerial view of the Enrico Fermi Nuclear Generating Station, Frenchtown Charter Township, Michigan 
(NRC/wikimedia.org photo)