Over the last several years, examination of U.S. national security interests within the context of the global commons has emerged as a major policy issue in the defense community. At the highest levels of the Department of Defense (DOD), there is now an awareness that the U.S. military will be confronted by a host of challenges "to stability throughout the global commons." Furthermore, the Nation can "expect to be increasingly challenged in securing and maintaining access to the global commons and must also be prepared for operations in unfamiliar conditions and environments." In response, the 2010 Quadrennial Defense Review Report has now assigned "assured access" to the commons as a top priority for U.S. military forces