U.S. Army Staff Sergeant Bradford McDonald, 25th Combat Aviation Brigade, UH-60 Black Hawk helicopter maintainer, instructs Soldiers and Aviators of the King’s Guard, Royal Thai Army, on how to properly maintain a Black Hawk during exercise Cobra Gold in Lop Buri, Thailand, Feb. 14. Cobra Gold 15 increases interoperability between both nations in order to be able to extract causalities safely and swiftly, as the capabilities of the Black Hawk can be crucial in the event of a humanitarian relief and assistance efforts.