NEW YORK--(BUSINESS WIRE)--L-3 Communications (NYSE:LLL) announced today that Mark Von Schwarz has been appointed senior vice president and president of the company’s Aerospace Systems business segment effective immediately. Prior to this promotion, Mr. Von Schwarz, a 15-year veteran of L-3, served as the president of the ISR & Aircraft Systems sector and Mission Integration division of L-3 Aerospace Systems. He succeeds John C. McNellis, who is retiring from L-3 but will remain with the co