150413-N-AT895-147 NATIONAL HARBOR, Md. (April 13, 2015) Chief of Naval Operations (CNO) Adm. Jonathan Greenert, Commandant of the Marine Corps Gen. Joseph Dunford, Jr., Commandant of the Coast Guard Adm. Paul Zukunft and Paul N. Jaenichen Maritime Administrator, U.S. Department of Transportation answer questions during a Service Chiefs' Update panel at the 50th Anniversary of the Sea-Air-Space Exposition. The Navy League's Sea-Air-Space Exposition was founded in 1965 as a means to bring the U.S. defense industrial base, private-sector U.S. companies and key military decision makers together for an annual innovative, educational, professional and maritime based event. (U.S. Navy photo by Mass Communication Specialist 1st Class Nathan Laird/Released)