VAH-123, nicknamed the Professionals from 1961 onward, was a Heavy Attack Squadron of the United States Navy, based at NAS Whidbey Island, Washington.

[1] During its time, the squadron flew many different aircraft types, beginning in the years shown: Lockheed P-2 Neptune (1957); Douglas F3D Skyknight (1957); Grumman F-9 Cougar (1958); Douglas A-3 Skywarrior (1958, with several variants over the years); and Grumman A-6 Intruder (1966).

[1] The unit was established to train personnel for the heavy attack mission, including the pilots, bombardier/navigators and aircrewmen.

[1] In 1967, VAH-123 was relieved of its mission of replacement training in the A-6 Intruder when VA-128 was established as a separate squadron and assumed that job.

[1] This article incorporates text from the public domain Dictionary of American Naval Aviation Squadrons.