"[2] "By November 1954 its geographical boundaries included northern California, southern Oregon, and parts of Nevada and Utah.

"[2] "On 15 February 1959, it added the San Francisco Air Defense Sector to its components, and the geographical area expanded to include California and Arizona, and parts of Oregon, Idaho, Nevada, and New Mexico.

"[2] "The division gained the Los Angeles, Phoenix, and Reno Air Defense Sectors and also the 552d Airborne Early Warning and Control Wing, whose Lockheed C-121 Constellation AWACS aircraft augmented naval picket ships in providing radar coverage seaward from the west coast of the United States.

Reorganization in 1963 altered the 28th's boundaries to include the states of Nevada, Arizona, Utah, and parts of California, Oregon, Idaho, Montana, Wyoming, Colorado, and New Mexico.

This article incorporates public domain material from the Air Force Historical Research Agency