May 1962. A display showing the importance of understanding and designing to mitigate the Hazards of Electromagnetic Radiation to Ordnance (HERO). The sign in the center says: "The U.S. Naval Weapons Laboratory Dahlgren Virginia has Technical Direction of the HERO program under the Bureau of Naval Weapons. This program is concerned with determining the susceptibility of naval ordnance to electromagnetic radiation from radar and radio transmitting equipment and with developing procedures, techniques, and materials to eliminate this hazard."