A person walks past lines of state police assembled at Carnegie Mellon University as part of the security preparations for tomorrow's G-20 Summit in Pittsburgh, Pa. , Wednesday, Sept. 23, 2009. AP Photo logo AP Photo 2 months ago

A person walks past lines of state police assembled at Carnegie Mellon University as part of the security preparations for tomorrow's G-20 Summit in Pittsburgh, Pa. , Wednesday, Sept. 23, 2009.