1969 summer Ft. Lauderdale spiraling pinpoint of white light, spirals across the night sky with neon green cloud alongside.

I was 15 and living with my married sister (26) while she was pregnant in a residential area of Fort Lauderdale, FL near the inter-coastal waterway. We went into her backyard, behind the pool to steal lemons off of her neighbor's lemon tree.  It was dark and a clear night. My sister exclaimed & grabbed my arm & pointed up towards the sky.
 STRAIGHT UP was the brightest white light I'd ever seen (brighter than a Klieg light), a pinpoint of white light that spiraled out in lines that were so even they could have been made with a 'compass'... the pinpoint of light continued to shine as the spiraling lines filled the entire upper horizon... but what was odd is that we could see through the widening white, spiraling lines... we could see the starry sky through the widening white lines.
 Next to the pinpoint of white light was a neon green cloud.  A cloud, like a white cloud you'd seen on a blue-sky day, except this cloud was green and it glowed like a green neon sign.
 We both stood there with our mouths agape and watched this entire phenomenon for about 2 minutes... the white, transparent, WIDE spiral lines filled the entire upper horizon and then the white pinpoint just stopped emanating light and the green cloud took a few more minutes to fade away.
 Apparently, thousands of people in Ft. Lauderdale saw this and called into police.  NASA claimed the next day that it was a 'reflection off of a rocket that was shot over the ocean... as the sun was going down.'  The only problem is, it was DARK, it was 8:30 PM and the sun sets on the Gulf/west side of Florida.  We were on the east side of Florida, quite close to the Atlantic ocean (perhaps 1 mile).
 There was no way this was a reflection off a rocket as it was STRAIGHT UP and the pinpoint of light was emanating from above the earth (from space) and it shown down to the atmosphere where it spread out across the entire upper sky.
 In my opinion, some superior visitors were taking a very large 'photo' of the area.
 The green cloud was translucent.  The white spiral lines were transparent.
 I work in the film business and there is no light we have today that is as bright as the pinpoint of very white light was.
Witness indicates that the date of the incident is approximate.  PD