Declassified U.S. government documents and witness testimony from former or retired U.S. military personnel confirm beyond any doubt the reality of ongoing UFO incursions at nuclear weapons sites. When I say UFO, the witnesses have described these craft as disc-shaped, or cylindrical shape, or spherical. These objects are capable of both hovering and high-velocity flight, usually completely silently. Over the past 37 years, I have personally located and interviewed more than 120 of these former or retired military personnel, all of whom report UFO incidents at one or more of the following locations: nuclear missile sites, nuclear weapons storage areas, and nuclear weapons test sites in Nevada and the Pacific during the era of atomic atmospheric testing. I believe, these gentlemen believe, that this planet is being visited by beings from another world who, for whatever reason, have taken an interest in the nuclear arms race which began at the end of World War II. Regarding the missile shut down incidents: my opinion, their opinion, is that whoever are aboard these craft are sending a signal to both Washington and Moscow, among others, that we are playing with fire, that the possession and threatened use of nuclear weapons potentially threatens the human race and the integrity of the planetary environment.