WASHINGTON, Nov. 22 -- The U.S. Navy issued the following news release: The U.S. Navy recently achieved several important milestones for the DDG 51 Arleigh Burke-Class Destroyer Flight III upgrade, representing significant progress toward delivering critical Integrated Air and Missile Defense capability to the fleet. The DDG 51 Flight III upgrade is centered on the AMDR/SPY-6(V)1 Air and Missile Defense Radar (AMDR) system that provides improved capability over earlier DDG 51 class ships by en  more