In January 1939, Major General Henry "Hap" Arnold, who became chief of the U.S. Army Air Corps (AAC), proposed to Congress that money be spent on a strong air defense. It soon became a national priority to secure airfields and bombing and gunnery ranges. An effort was also being made in cooperation with the WPA and Civil Aeronautics Authority to build up civilian airports of value to national defense efforts (Tagg 1998). Albuquerque city leaders began to examine the possibility of an air base locating on the mesa, and through extensive negotiations with the AAC, succeeded in their efforts when the Army established an air base on the East Mesa in 1939.