UFO's have been watching Nuclear bases (facilities) for many years
it's not a joke by any means....
it might even be us ]
From the future trying to change the past
or it's other members of Alien Races that
need to keep the Earth functional as it is.....
in the planetary position it occupies
and don't want us blowing it up...
not wanting us to destroy it in WW3.
UFOs eyed nukes, ex-Air Force personnel say – This Just In - CNN.com Blogs