text:  yeah uh one of them because we're hiking down into the canyon uh we're gonna conserve weight we're not bringing a bunch of water with us so we have to purify it and we on the trip ended up running out of usually iodine tablets we ran out of that so we had to switch to some chlorine purification and then when that stopped working for a bit we were just out there boiling water for people and kind of had to just figure it out and work on it we had some twisted ankles