Labor day weekend 2011, while getting into the car to go home from my moms (she lives on a mountain top near Tour-Ed mine directly off rt 28n new Kensington/Tarentum exit, so trust me when I say from her driveway and property, the night sky is fully open for view. A triangular form of lights caught our eye, and they were green. They rotated around each other at a pretty fast speed, then what I always call "pinged" away, disappearing out of site. I now live here and I feel like I am being watched when I go outside at night. VERY CREEPY. Always wondered with this too if anything similar was reported around this time.