UFO News Article:
“Air Force Bombed By UFO Queries”, 31 March 1966
(Pittsburgh Post-Gazette, Pennsylvania)

The U.S. Air Force was inundated by UFO queries from U.S. citizens after the March 1966 south eastern Michigan UFO wave:

http://news.google.com/newspapers?id=NB0NAAAAIBAJ&sjid=j2wDAAAAIBAJ&pg=7199,5000008

(wikimedia.org image)