I live in Gap, PA, which is on the border of Lancaster County / Chester County. Last night, July 29th, 2012. I was traveling eastbound on US Rte. 30. I was driving when I saw 6-7 large "fireballs" traveling towards me. I knew pretty quickly these were not airplanes, due to how they were grouped together and I have been in this area for 12 years and I am accustomed to the airplanes that travel in this area, commercial aircraft travel MUCH higher than what I had observed. They were a bright burning red color, they were constant with their color and did not dim out or flash / blink. I pulled over on the side of the road and began filming with my Iphone 4GS. The first 4 were traveling in two pairs and the others were traveling in singles behind. I drove to another location off the highway about 150 yards west of where I was positioned on the highway. This is when the objects started to align in a triangle, then they positioned themselves in a straight line 90 degrees above the ground, I have the triangle on video, however I do not have when they aligned in a straight line. They started to disappear shortly after they were in triangle formation.