U.S. Army Sgt. Ricardo Mercado, a native of Philadelphia,

U.S. Army Sgt. Ricardo Mercado, a native of Philadelphia, and a military policeman with the 554th Military Police Company, 9th Engineer Battalion, delivers instructions to members of the Afghan Uniformed Police during an improvised explosive device awareness class, March 15, at Combat Outpost Zerok. the class was designed to teach the AUP proper identification and reaction techniques designed to maximize safety and minimize casualties.