The green light was brighter than any nav light on an aircraft or boat.

My wife , two week old daughter and I were camping on the beach at Pine Trees. It had been raining off and on most of the night. A squall had just passed and we were settling down for another half hour of sleep before the next squall came through. My wife, in a very excited voice said to me "what are those lights." I would like to say that the next thing we knew it was July 10th, and we could not account for the last five days, but what I saw was 3 very bright green lights in a triangle pattern, with a light at each point. They were moving very rapidly from South to North at eye level. There was no sound.  They were in view for about 10 seconds and dissapeared from view. I don't think an aircraft would be flying on the deck under those conditions, wind shear, and a boat could not go that fast. The green light was so bright it left a retnal print in our vision for several minutes.  I was working as a Telescope Operator on Mauna Kea at the time.  I have seen many strange lights on Mauna Kea in the 15 years I worked there,  but can usually explain them away.