Curtis Ludlow&rsquo;s 4 Day Fire Workout Program | DVD Workout for Men and Women Created by U.S. Marine Corps veteran and founder of Boot Camp FX, Curtis Ludlow. Boot Camp FX is inspired by REAL U.S. Marine Corps boot camp physical fitness training. You get 4 Maximum Intensity 20-minute Workout DVDs to Get You Fit Quick! Workout calendar and nutrition program online.