Alerts from a GPS-enabled surveillance system that gunshots had been fired helped justify a Peoria police officer’s decision to stop and search a car in the area, a divided federal appeals court held.Splitting 2-1, the 7th U.S. Circuit Court of Appeals denied Terrill A. Rickmon Sr.’s motion to suppress the handgun found in the car in which he was a passenger.The court’s majority rejected the argument that the stop and search violated Rickmon’s Fourth Amendment right to be free of unreasonable …