First Operational F-15EX Arrives in Oregon; Milestone for Air Guard June 7, 2024 | By John A. Tirpak The first F-15EX—and the first new-type aircraft to be delivered to the Air National Guard before the Active force—arrived at Portland Air National Guard Base, Ore. on June 6. It's the first of 18 that will be flown by the 142nd Wing.