The United States Navy

When a crisis confronts the nation, the first question often asked by policymakers is: 'What naval forces are available and how fast can they be on station?'—Admiral Carlisle A. H. Trost
The United States Navy continues to be a major support to U.S. interests in the 21st century. Since the end of the Cold War, it has shifted its focus from preparations for large-scale war with the Soviet Union to special operations and strike missions in regional conflicts. The Navy participated in Operation Enduring Freedom, Operation Iraqi Freedom, and is a major participant in the ongoing War on Terror, largely in this capacity. Development continues on new ships and weapons, including the Gerald R. Ford class aircraft carrier and the Littoral combat ship. Because of its size, weapons technology, and ability to project force far from U.S. shores, the current U.S. Navy remains a potent asset for the United States Commander-in-Chief (the President of the United States).
In 2007, the U.S. Navy joined with the U.S. Marine Corps and U.S. Coast Guard to adopt a new maritime strategy called A Cooperative Strategy for 21st Century Seapower that raises the notion of prevention of war to the same philosophical level as the conduct of war. The strategy was presented by the Chief of Naval Operations, the Commandant of the Marine Corps and Commandant of the Coast Guard at the International Sea power Symposium in Newport, R.I. on 17 October 2007. The strategy recognized the economic links of the global system and how any disruption due to regional crises—man made or natural—can adversely impact the U.S. economy and quality of life. This new strategy charts a course for the Navy, Coast Guard and Marine Corps to work collectively with each other and international partners to prevent these crises from occurring or reacting quickly should one occur to prevent negative impacts on the United States.
In 2010, Chief of Naval Operations, Admiral Gary Roughead noted that demands on the Navy have grown as the fleet has shrunk and that in the face of declining budgets in the future the US Navy must rely even more on international partnerships.