Company A 802nd Engineer Aviation Battalion landed at Pohang and began improving the airfield on 12 July by added a 500 feet (150 m) PSP extension and building hardstands for 27 F-51 Mustangs.

Troops of the Korean People's Army (KPA) 12th Division infiltrated the Pohang area in early August and made guerrilla attacks against the airfield.

ROK and U.S. forces routed the KPA several days later, but the continued presence of guerrilla units mitigated against an early return to the base.

[2]: 124 USAF units based there from July–August 1950 included: The 802nd Battalion returned to Pohang on 27 September finding the airfield relatively undamaged.

[2]: 178 In July 1953 the United States Navy deployed two AJ (A-2) Savage aircraft to K-3 as a nuclear deterrent in the final days of the Korean War.

[3] In October 2008 the United States Navy relocated a permanent detachment of MH-53E Sea Dragons assigned to HM-14 from Iwakuni, Japan.