Interesting that the fire fighter first used his helmet then boots as a makeshift flotation device. Quite surprised the 02 tank did not float very well, I guess the straps and backplate mitigated any buoyancy from any air in the tank.
My sister became a master diver while her husband was stationed with Air Force, in Republic of Panama. She occasionally helped out with training special forces.
On the pool for the Gear 2 helmets not push got wet inside either is the boots so how can we be in water like that in the water can be on the outside but not inside the gear so you ruin a pair of $100 or more piece of equipment helmet boots pants and whatever else you got air tank so how can you put that in the in the swim pool thank you very much I should know I'm in the Party part retired