U.S. Marine Corps Staff Sgt. Zachary Hilko, right,

U.S. Marine Corps Staff Sgt. Zachary Hilko, right, an aviation supply chief, executes a counter to the mount on Cpl. Luis Alicea, left, a ground support equipment mechanic, both with Marine Aircraft Group 49, 4th Marine Aircraft Wing, Marine Forces Reserve, during Martial Arts Instructor Course 1-19 at Naval Air Station Joint Reserve Base New Orleans on May 22, 2019. Marines execute a counter to the mount to remove an opponent on top of them and gain the tactical advantage. To increase readiness and to support the total force, Reserve and active Marines with MARFORRES participate in the MAI Course. (U.S. Marine Corps photo by Lance Cpl. Preston L. Morris)