The Navy's top brass is reshuffling its Pentagon staff responsible for the development and procurement of submarines, ships and naval aircraft, giving a single three-star admiral oversight of the services' near- and long-term weapon system investment decisions. Previously, the Navy's long-term modernization needs were the domain of the deputy chief of naval operations for warfare requirements and assessments (N6/N7), headed by a vice admiral. The nearer-term investment decisions were the responsibility of the deputy chief of naval operations for resources,...