Lunar Olympics - Astronauts jumping in 1/6 earth gravity

Lunar Olympics - John Young and Charlie Duke jumping in 1/6 gravity. In his book, Moonwalker, Duke said that, after John did a flat-footed jump, getting about four feet off the surface. “I decided to join in and made a big push off the moon, getting about four feet high. ’Wow!’, I exclaimed. But as I straightened up, the weight of my backpack pulled me over backward. Now I was coming down on my back. I tried to correct myself but couldn’t, and as my heart filled with fear I fell the four feet, hitting hard - right on my backpack. Panic! The thought that I’d die raced across my mind. It was the only time in our whole lunar stay that I had a real moment of panic and thought I had killed myself. The suit and backpack weren’t designed to support a four-foot fall. Had the backpack broken or the suit split open, I would have lost my air. A rapid decompression, or as one friend calls it, a high-altitude hiss-out, and I would have been dead instantly. Fortunately, everything held together.“