GUATEMALA CITY– I remember my first time. That first time sinking under the water and thinking, I can’t do this, I can’t breathe underwater, and on faith in the equipment taking that first breath. The dry air flowed through the regulator and filled my lungs. I heard the hiss of the inhalation and the loud bubbling exhalation and then the next breath and for the first time was able to look around without the immediate thought of getting back to the surface. The thought that followed was, how long can I stay in this place? How long can I make this wonder last? It wasn’t very long, a few minutes, but longer than anyone can hold their breath. There were no fish, no coral reefs and no danger from sharks or kraken or marauding enemy divers. We were safe in the pool at my military school where an Army diver was giving a demonstration and a pitch for his specialty. It might not seem very exciting but if you have never drawn breath underwater then you have no basis of comparison.