In CrossFit and functional fitness, athletes and trainers in the U.S. and overseas regularly hold memorial workouts (often called Hero WODs) to commemorate the fallen on Memorial Day.
Do the Pull-Ups. Then do the Double-Unders and Pull-Ups. Then do the Burpees, Double-Unders, and Pull-Ups. Continue this way until the final found of Air Squats, Sit-Ups, Burpees, Double-Unders, and Pull-Ups.