The 503d Air Defense Group is an inactive United States Air Force organization. Its last assignment was with the 25th Air Division of Air Defense Command (ADC) at Portland International Airport, Oregon. It was inactivated on 18 August 1955.
North American F-86D Sabres of the 357th FIS
USAF F-89D Scorpion firing missiles
The 25th Air Division is an inactive United States Air Force intermediate echelon command and control organization. It was last assigned to First Air Force, Tactical Air Command (ADTAC). It was inactivated on 30 September 1990 at McChord Air Force Base, Washington.
T-33A "T-Bird" F-106A Delta Dart and F-15A Eagle from the 318th Fighter-Interceptor Squadron, McChord AFB, WA in formation near Mt Rainier in Washington State.
Image: 25th Air Division crest
25th Air Division/Northwest Air Defense Sector AOR, 1987–1990