Scar Symmetry have pulled out of this year’s ProgPower USA Festival. Monuments will now be taking their place. The event will be held in Atlanta, GA on September 4-7 and the updated daily lineups can be found below: September 4: Angra, Circus Maximus, Victorious, and Darkwater. September 5: Dark Tranquillity, Leprous, Twilight Force, Monuments, NorthTale,…