“Things Have Gone Wrong During Rocket Research”,
19 March 1967 (Reading Eagle, Pennsylvania)
The article mentions that scientists at the White Sands Proving Ground/ White Sands Missile Range, New Mexico made many UFO sightings during missile tests:
http://news.google.com/newspapers?id=xQorAAAAIBAJ&sjid=DZoFAAAAIBAJ&pg=2880,1365115
Map of White Sands Missile Range, New Mexico
(wikimedia.org image)