Master Sgt. Eugene Mariano, 298th Support Squadron radar maintenance airman gives a brief on radar maintenance procedures, Aug. 20, 2019, Clark Air Base, Philippines. Mariano was taking part in a Air Defense Subject Matter Expert Exchange between the Hawaii Air National Guard and the Philippine Air Force. The SMEE was part of the National Guard State Partnership Program which pairs a state's National Guard with a partner nation to promote security cooperation and capacity. (U.S. Air National Guard photo by Senior Airman Orlando Corpuz)