sentences:  In April 1966, the division was replaced by the First Air Force, and moved without personnel or equipment to Adair Air Force Station, Oregon, where it assumed responsibility for the defense of Oregon, part of California and Nevada by the inactivation of the Portland and Reno Air Defense Sectors.Assumed additional designation of 26th NORAD Region and 26th CONAD Region after activation of the NORAD Combat Operations Center at the Cheyenne Mountain Complex, Colorado and reporting was transferred to NORAD from ADC at Ent Air Force Base in April 1966.The division was gradually phasing down until it replaced the 27th Air Division at Luke Air Force Base, Arizona in November 1969, when in an ADCOM reorganization of atmospheric defense forces, the command became responsible for the air defense of a large area of the southwest.