Black Triangle Sighting in Washington, Missouri on 2017-07-24 21:35:00 - It was dark a triangle shape light pattern with one light in the center. possible a.R.V.-tr3b

Driving south on hwy 185 west of washington mo. lights where bright. a hellicopter flying very slow in what appeared to be a circle or maybe hovering. it was pretty cool when i got to a clear, open field area where i could see all 4 lights in the triangle pattern. the lights just quit shining.