3 lights over the midnight sky

I was outside and looked up. Seen three total of the same kinda of light. Almost like a Christmas tree light twinkling. One was hovering very close like helicopter. And another was along a tree line. And the other was wide open over yonder. The one wide open stayed the longest. They all seem to be hovering and twinkling with light. And I got my gun spotting scope and could tell they were gaining altitude and the other two seemed to disappear in a blink of an eye. Thru the spotting scope. They looked like trianglar in shape. But was twinkling at a frequency most stars wouldn't.