Page:A Concise History of the U.S. Air Force.djvu/48

 all-jet B-47 Stratojet, could carry atomic bombs that weighed upwards of 10,000 pounds (the Mark II-IV series). The Atomic Energy Commission (AEC), formed in 1946 to replace the wartime Manhattan Engineering District, succeeded in reducing the size of the bomb (the Mark 7 weighed 1,680 pounds) but did not change the basic atomic equation. A handful of Air Force bombers carried more power than all of history's armies and navies combined. Under postwar demobilization, which affected the AEC just as much as the armed services, the nation's stockpile of atomic weapons rose to only nine in 1946. In 1947 the commission took over weapons-building programs and the stockpile reached thirteen as the Truman administration and the JCS discussed the level of production necessary to maintain an effective deterrent. In December 1947 the JCS approved a goal of 400 weapons for the AEC. At the same time, while SAC began to recover from the chaos of demobilization, its state of readiness remained low. Under General George C. Kenney and his deputy, Major General Clements McMullen, it assigned high priority to establishing a rigorous aircrew training program. This program, the secrecy that shrouded atomic weapons jealously guarded by the AEC, and the lack of information available to operational forces limited SAC's potential as an atomic strike force.