From Misawa , aircraft and personnel of the 67th , 356th and 391st TFS rotated six aircraft every ten days to Kusan and Taegu Air Bases in South Korea performing Nuclear alert duty . On 16 May 1968 , the M8 .3 Tokachi earthquake caused over $ 1 million worth of damage to Misawa AB . Air Force fighter operations ceased at Misawa in early 1971 , and the wing phased down operations . All flying resources were reassigned to Kusan AB South Korea for the 3d Tactical Fighter Wing , and the wing was inactivated on 15 March , being replaced by the 6112th Air Base Group as Misawa was phased down for reconstruction
Tokachi earthquake
1968 Tokachi earthquake
475th Air Base Wing