Lt. Col. Shane Gouker, operations officer for Futures Directorate, Combat Development and Integration Department, plays the role of a renegade shooter at The Raymond G. Davis Center aboard Marine Corps Base Quantico during an active-shooter drill with role players Tuesday. - Lt. Col. Shane Gouker, operations officer for Futures Directorate, Combat Development and Integration Department, plays the role of a renegade shooter at The Raymond G. Davis Center aboard Marine Corps Base Quantico during an active-shooter drill with role players Tuesday.