“A Smoking Radiating Ruin at the End of Two Hours”Op-36C to Op-36 Via: Op-36B3 Subj: “Briefing Given to the Representatives of all Services at SAC Headquarters, Offutt Air Force Base, Omaha, on 15 March 1954,” signed by W.B. Moore, Captain, USN, 18 March 1954, Top Secret