WASHINGTON - A Raytheon Co. satellite-guided artillery shell, the first weapon of its kind, killed a top al- Qaeda leader in Iraq, the U.S. military said. The firing of two new 155mm “Excalibur” shells was part of a combined Army and Air Force assault July 14 on a meeting house in Arab Jabour south of Baghdad directed against the leader, Abu Jurah, and 14 associates, U.S. forces said today. Raytheon, the world’s biggest missile maker and Southern Arizona’s largest employer, developed the Excalibur with Bofors Defence of Sweden. The statement e-mailed from Baghdad said Abu Jurah was “the top target”...