The Emerging Era in Undersea WarfareIntroductionU.S. defense strategy depends in large part on Americas advantage in undersea warfare. Quiet submarines are one of the U.S. militarys most viable means of gathering intelligence and pro- jecting power in the face of mounting anti-access/area-denial (A2/AD) threats being fielded by a growing number of countries. As a result, undersea warfare is an important, if not essential, element of current and future U.S. operational p
