4 red lights, with some white, in a sharp triangle formation with the 4th light in front of the point. No sound moving slowly.I saw 4 red, with some white, lights in the West sky of Bethel Park traveling VERY slowly from North to South in a sharp pointed triangle formation with the 4th light forming a needle pointer at the triangle's point. No sound! They did not appear to be very high in the sky. I watched them for about 2 minutes as they disappeared over the trees' horizon.