Marcus McClain (CF-L3), a retired master sergeant turned CrossFit Seminar Staff head trainer, describes his journey from the U.S. Army to a career in coaching.
Watch Sergeant Mac's Story: Better Leader, Better Life With CrossFitMarcus McClain (CF-L3), a retired master sergeant turned CrossFit Seminar Staff head trainer, describes his journey from the U.S. Army to a career in coaching.
Watch Sergeant Mac's Story: Better Leader, Better Life With CrossFit