john h hanzl (author)


This past December I packed up a mountain of gear and drove down to cave country in northern Florida to get my MOD 1 training on my Sentinel rebreather. It was, well, challenging. Which was exactly what I wanted. Personally if a challenge isn’t difficult then it’s not worth pursuing. Though the twelve+ hour days kept me too busy to really think about shooting any video or stills, I still managed to grab a little… Read More