2 orange/red orbs hovering and moving erratically south west to east of zip 19473Friday Night 8/17/2012 Philadelphia Folk Festival on Old Poole Farm in Schwenksville just before sunset (exact time unknown). My son and I were listening to an Irish/Celtic band called Comas at the Main Stage (they have 5). My son hits me, points left and says "Look at that." I am confused as to exactly what direction I am looking (definitely south, probably west - leaning to east). Just over the tree line was an orange/red orb. Definitely much bigger than a star – probably at least a hundred times bigger than a star. Imagine a watch battery, cut into quarters and that was the size in our view. It hovers, then it moves parallel to the left. Then it arcs up and to the right. It hovers. Then it arcs down and to the right. Then it zooms directly left to its original spot that we saw it. Then it shoots diagonally to the right. It continues this unusual pattern for the next 5 minutes. Then another orange/red orb appears below and to the left of the fir! st one. It moves to the right and then both of them disappear below the tree line not to show up again.In order to validate this, I tapped the shoulder of the guy next to me on the hill and asked him and his date to look up. They definitely saw it move, but declined to acknowledge anything and responded by whispering something in each other’s ear. Probably something about this nutcase next to them! The two appeared again within 5 minutes and then disappeared. My son and I couldn’t imagine that anybody else could not have seen this. PS this happened during an electrical storm. Heavy rain pursued.