of Staff and Chief of Naval Operations, but the most Eisenhower and Nimitz would allow was a status equal to that of the heads of a technical service, although Groves still reported directly to them. They also characterized his role as a staff post rather than a command, although Groves was already exercising the functions of a commander at Sandia. After the National Security Act of 1947 created an independent Air Force, Groves reported to the Chief of Staff of the Air Force as well, and was given a second deputy chief from the Air Force, Major General Roscoe C. Wilson, who had worked on the Silverplate project during the war. Groves initially established the headquarters of the AFSWP in the old offices of the Manhattan Project on the fifth floor of the New War Department Building in Washington, DC, but on 15 April 1947 it moved to the Pentagon. As AFSWP headquarters expanded, it filled up its original accommodation, and began using office space in other parts of the building, which was not satisfactory from a security point of view. In August 1949, it moved to of new offices inside the Pentagon. This included space for a soundproof conference room, a darkroom, and vaults where its records and films were stored. The 2761st Engineer Battalion (Special) at Sandia was commanded by Colonel Gilbert M. Dorland, and consisted of a headquarters company, a security company (Company A), a bomb assembly company (Company B) and a radiological monitoring company (Company C), although Company C was never fully formed. For training purposes, Company B was initially divided into command, electrical, mechanical and nuclear groups, but the intention was to create three integrated 36-man bomb assembly teams. To free the bomb assembly teams from having to train newcomers, a Technical Training Group (TTG) was created under Lieutenant Colonel John A. Ord, a Signal Corps officer with a Doctor of Science degree from Carnegie Institute of Technology who had directed the training of thousands of radar technicians at the Southern Signal Corps School during the war. The battalion was redesignated the 38th Engineer Battalion (Special) in April 1947, and in July it became part of the newly created AFSWP Field Command, under the command of Brigadier General Robert M. Montague. The TTG was soon reporting directly to Montague as well. The first bomb assembly team was formed in August 1947, followed by a second