John Kennedy actually said...
These plans and programs shall be designed to develop a state of readiness in these areas with respect to all conditions of national emergency, including attack upon the United States and, consistent with applicable provisions of the Atomic Energy Act of 1954, as amended, will be closely coordinated with the Department of Defense and the Office of Emergency Planning.
Context
Executive Order 11089—Assigning Emergency Preparedness Functions to the Atomic Energy Commission
02/25/1963