SAN DIEGO -- Two ongoing naval conflicts, one playing out in the Red Sea and other in the Black Sea, have illuminated a single critical lesson: the Navy and Marine Corps must rapidly advance their techniques and tactics to stay abreast with the rapidly changing "character of war," especially when it comes to defending ships from missiles and drones, service officials said. In the few months since Oct. 19, when the Arleigh Burke-class destroyer Carney (DDG-64) first intercepted cruise missiles...