The Civil Defense Administration was a government agency of the United States of America, tasked with disseminating information about nuclear war survival and the creation and distribution of propaganda among the United States citizens. As it's name suggests, it was meant to coordinate and oversee civil defense preparations within the United States, at State, Commonwealth & Federal levels. This included the national civil Emergency Alert System, which was in turn tied into the Emergency Alert Systems of the various Commonwealths, including that of the Commonwealth of Massachusetts.