Strange things happen at Nats, and different outcomes for different people too. One time at Nationals, a steel popper failed to fall. Looking at the popper, you could see the hinge pin had fallen out, of one side, and the popper was jammed into the ground. You would think range failure, right? Nope, popper was calibrated and I got the miss. I KNOW that would not have been the case were my last name Leatham or Jarrett.