Spinning lights inside of a small boiling cloud.

During the Cuban Missile Crisis, I was stationed at Ramey Air Force Base. It housed KC-135 tankers, B-52 and U-2 hangars, and 8 nuclear storage bunkers with 500 pound bombs. I held a top secret clearance; I was a member of the Combat Defense Force and Sentry Dog Handler.
We were working twelve hour shifts during the crisis, it was near relief time when I looked out towards the sunrise, off into the calm, blue, orange sky and saw something strange. There was one small cloud with flashing lights moving inside of it, and he cloud was moving towards the no-fly-area.\ We K-9 units wanted to know what it was. We took a truck across the runway to the flight crews Quarters. Everyone was looking at the cloud as it slowly approached, making no noise, red, blue, yellow lights revolved inside the bubbling, boiling cloud like a carousel. It was now 30 feet above the ground and it seemed to be roughly 20 feet deep.
While staring at this spectacular object, I sincerely hoped no one would fire on it because we were all armed at the time.
I went off duty for three days and came back to silence. Nobody talked about it. And nobody told me not to talk about it; except my mother. A strike on our facility would have been even more catastrophic for the United States than an attack on the east coast from Russia or Cuba.
Source indicates that the date of the sighting is approximate.  PD