With this 50th issue, Joint Force Quarterly celebrates its 15th anniversary. While much has changed since 1993, the interoperability problems and resistance to greater synergy that inspired General Colin Powell to establish JFQ are strikingly resilient. On April 21, 2008, Secretary of Defense Robert Gates in speeches at the U.S. Military Academy and the Air War College asserted that the Armed Forces were adapting too slowly to new enemies and that military leaders were "stuck in old ways of doing business." Two days later, Admiral Michael Mullen addressed the students of the Industrial College of the Armed Forces and the National War College as part of the National Defense University?s Distinguished Lecturer Program. He noted that the combined student bodies included a great many combat experienced leaders and urged them to think differently about the nature of war and to consider new approaches to national security challenges. The Chairman recommended JFQ as an effective vehicle for professionals to air ideas and outline innovative concepts for securing national security objectives. In this issue, JFQ supports this mandate by examining elements of naval power and some contemporary challenges that make a strong U.S. Navy as important as ever.