The eyes of Avery Garrett, 8, peer out from behind the glass of the helmet’s front porthole.

The 56-pound helmet worn by Don when he was in the U.S. Navy offered four small portholes from which to look when he walked the bottom of the ocean, sometimes 300 feet below sea level. Don’s Navy diving classmates were the last to use the helmets in the 1980s before they were replaced by lighter fiberglass models. Throughout the week, campers are learning about all sorts of unique outdoor activities, including deep-sea diving.