In 2004, Secretary of Defense Donald Rumsfeld directed a new strategic doctrine for the armed forces: Combat forces were to respond to crisis or combat situations anywhere in the world within 10 days. The crisis or conflict was to be resolved within 30 days, after which the committed forces should be reconstituted within 10 days and ready for transfer to another crisis or combat area. This 10-30-30 strategy replaced the two-and-half conflict, one-plus-one, and other recent strategic concepts that sought to guide the development, structure, and operations of U.S. armed forces.
In response to those and earlier requirements, Chief of Naval Operations Admiral Vern Clark has produced a series of initiatives or "pillars" under the umbrella of "Sea Power 21":*
* Sea Strike: Expanded power projection that employs networked sensors, combat systems, and warriors to amplify the offensive impact of naval forces. This includes increased operational tempo, reach, and effectiveness.