UFO's buzzed High Security Air Force Base in early 1970's.

Vandenberg AFB was placed on full alert at the time due to continuous sightings of UFO's buzzing and illuminating the missle lauch complexes. I do not remember the exact date but a record of the incident at the time would still be in the Lompoc Record newspaper and the base newspaper. 
I was a Sgt. who escorted missles on base to the lauch complexes.  While waiting for arrival of missle, talked to gate guard (SP) who related personal info of incident.  At the time he was guarding a launch facility when it was "lit up" by UFO. 
Security helo was called and ufo lights went out upon arrival of copter.  As soon as copter left area it lite back up and went about its business. 
Guards were only armed with M16's and were afraid to shoot at it.  Air Force Police vans engines would not work and vans stalled out. UFO's flew around Vandenberg off and on most of night.  
Small articles next day in local press.