Kingsley Field AGB is home to the 173rd Fighter Wing, which is located in Klamath Falls, Oregon. The 173rd Fighter Wing is responsible for training air-to-air combat pilots. Also, as part of the Air National Guard, the wing serves the state of Oregon and the United States in times of peace and war.
On 1 April 1996, the 173rd Fighter Wing was formed at Kingsley AGB as a host organization and parent unit for the 114th Fighter Squadron when the unit was authorized to expand, with the 114th being transferred from the 142nd Fighter Wing at Portland to the new wing at Kingsley ANGB. Along with the 114th FS, the 173rd consists of the 173rd Operations Group; 173rd Maintenance Group, 173rd Mission Support Group and 173rd Medical Group.
Initially flying F-16A Fighting Falcon aircraft as a formal training unit (FTU), the F-16As were retired in the late 1990s as their service life was ending. The squadron began receiving F-15A/B Eagles in 1998. It was upgraded to the F-15C/C Eagle in 2004, continuing its mission as an ANG interceptor training unit.