The 90th Fighter Squadron (90 FS) is a squadron of the United States Air Force. It is assigned to the 3d Operations Group, 3d Wing, Joint Base Elmendorf-Richardson, Alaska, Pacific Air Forces. The squadron is equipped with the F-22 Raptor Fighter.The 90 FS is one of the oldest units in the United States Air Force, first being organized as the 90th Aero Squadron on 20 August 1917 at Kelly Field, Texas.