In November 1947 ADC "decided to go ahead with implementation [using] AC&W assets…ADC possessed." The January 1, 1948, Finletter Commission report "while recognizing the need for a radar early-warning system, cautioned against the extraordinary expense of such a system, if constructed, to provide total coverage." The ADC commander "was ordered on 23 April 1948 to establish with his current resources [the initial networks with] AC&W systems in the Northwestern United States, the Northeastern United States, and the Albuquerque, New Mexico, areas, in that priority." (quote from Volume I, Chapter 2, p. 54; which cites Study No. 126.) The "first air defense division organization", the 25th Air Division, was established October 25, 1948, "at Silver Lake (Everett), Washington", the 26th Air Division was activated at Mitchell Field NY on November 16, and both were transferred to ADC on April 1, 1949.
