WASHINGTON -- Vice Adm. Phillip Balisle, Commander Naval Sea Systems Command, outlined prerequisites for acquiring a sea base during a panel discussion Wednesday at the Navy League's Sea-Air-Space Expo. The discussion, entitled "Ensuring Access Through Focused Acquisition," also featured comments by The Honorable John J. Young, Jr., Assistant Secretary of the Navy for Research, Development and Acquisition; Vice Adm. Walter B. Massenburg, Commander, Naval Air Systems Command; and Brig. Gen. William D. Catto, Commanding General, Marine Corps Systems Command. The first prerequisite he identified was thoroughly articulating the requirement.