A primary mission for Kirtland Field was recorded in the September 1946 narrative history: " provide aerial and ground functioning testing facilities and conduct functional tests on all equipment and materiel related to the use of special weapons and radioactive materials". Between late 1946 and early 1947, after the Atomic Energy Act creating the Atomic Energy Commission was passed, the AFSWP was established with Sandia Base as an installation under its control. A special engineering battalion was also created to aid in the assembly and maintenance of atomic bombs at Sandia Base.