McDaniel and his assistant had necessarily taught themselves to stand beside the student and watch the flight of the BB from the student's gun, which was far more difficult than standing directly behind the gun and watching the BB, and they had also taught themselves to watch the flight of a load of shot fired from a student's shotgun shell, and when the lighting was just right, each of them could hip-shoot a .22 revolver at a distant target and watch the .22 bullet fly toward its target. But, try as they might, neither of them could ever actually see any dents that the BB's had made in the surface of a big flat-washer when it was spinning as it rose in the air; the dent was just too small and the spin rate was too fast.