Strange light moving in an odd pattern above high voltage power transmission lines.On the evening of 23 December, 2015, I was returning home after a rip to our local department store. As I was parking our car in the front yard, I noticed a small bright light in the sky. At first I thought it was a navigational light on an aircraft. I live under the direct flight path of aircraft flying to and from Pittsburgh International, Washington-Dulles, and several other major airports in the area. But I have never seen aircraft lights move like this light did.This light although very bright and small moved from right to left, left to right, up and down, from side to side and corner to corner. It did not change speed or slow down to make these sudden movements.I thought I was seeing things, so I yelled to my wife to come out onto the front porch. She asked what I needed and I told her about the light. I showed her where to look to see the light and she confirmed what I had seen.She then called my three sons to come onto the porch and look at the light. Two of my sons and my eleven year old grand –daughter then came outside on the front porch. They also confirmed the light and its odd movement. We all agreed it was no aircraft that we knew of.I worked for ((deleted--aviation company)) for almost thirty years after serving a tour of duty with the ((deleted--aviation/military)). I have traveled around the world and have flown in all types of aircraft from a Cessna 150, an F4-Phanton to Boeing 747, and never have been in, or flown in any aircraft that moved like this light did. My third son also served a tour with the ((military)) air wing but he would not comment on what he saw.We did notice one thing strange about the light and its movements though. We live near a 500,000 and I am told a 750,000 volt power line that run side by side near our home. From where we were located and where the light seemed to be, it appeared to be moving above these power lines.I have waited to check on these lights again, but the weather has not been cooperative and every evening since seeing this light the sky has been overcast. I will continue to look for the light when I get a chance.((NUFORC Note: Witness indicates that the date of the sighting is approximate. PD))