I was with some friends going into Philly that night and as I was crossing the bridge, I saw three bluish-white lights in a triangular fashion blink at the same time. The triangular craft appeared to turn, because the lights turned in a circular fashion. However, it appeared to follow a straight-line path for about 10 or 15 seconds. I couldn’t make out any more details of the craft because it was very dark outside. This was my first UFO sighting, and something about it felt very extraterrestrial!