Military leaders discuss future warfighting concepts during the Naval Integration for the 21st Century panel at National Harbor, Maryland, May 16, 2016, as part of the Navy League of the United States Sea, Air, Space Exposition. Seated (left-right) are Lt. Gen. Michael Dana, deputy commandant for Installation and Logistics; Rear Adm. Thomas Shannon commander, Military Sealift Command; Lt. Gen. Ronald Bailey, deputy commandant for Plans, Polices and Operations; Lt. Gen. Jon Davis, deputy commandant for Aviation; Vice Adm. Robert Thomas, director, Navy Staff, and the moderator for the event, Lt. Gen. Robert Walsh, commanding general, Marine Corps Combat Development Command, deputy commandant for Combat Development and Integration. - Military leaders discuss future warfighting concepts during the Naval Integration for the 21st Century panel at National Harbor, Maryland, May 16, 2016, as part of the Navy League of the United States Sea, Air, Space Exposition. Seated (left-right) are Lt. Gen. Michael Dana, deputy commandant for Installation and Logistics; Rear Adm. Thomas Shannon commander, Military Sealift Command; Lt. Gen. Ronald Bailey, deputy commandant for Plans, Polices and Operations; Lt. Gen. Jon Davis, deputy commandant for Aviation; Vice Adm. Robert Thomas, director, Navy Staff, and the moderator for the event, Lt. Gen. Robert Walsh, commanding general, Marine Corps Combat Development Command, deputy commandant for Combat Development and Integration.