An aircrew from the 9th Special Operations Squadron

An aircrew from the 9th Special Operations Squadron perform preflight inspections in an MC-130J Commando II during Emerald Warrior/Trident at Naval Air Station North Island, Calif., January 19, 2019. Emerald Warrior/Trident is the largest joint special operations exercise where U.S. Special Operations Command forces train to respond to various threats across the spectrum of conflict. (U.S. Air Force photo by Staff Sgt. Erin Piazza)