I was walking to the store with my girlfriend one chilly night in a pa suburb near pittsburgh. as soon as we locked the door, and walked out of our apartment complex, we noticed it was a very clear night. looking at the stars while we were walking to the nearby discount store, we observed a cigar-shaped object, hovering in the air, before walking around the corner, past another apartment complex down the street from mine. i jokingly said, "if it disappears when we turn the corner, it's a ufo.", and well, it did. the moment we turned the corner, past the complex that obstructed the view of the object, we were scanning the sky for it, even though we'd just seen it moments before.