I thought I scored. I started doing some searching and found I may not have. I live next to the volunteer fire department. I asked a while ago if they had any old scba's they where gonna toss, I'm thinking on board air. Well wednesday I go to get a burn permit and the assistant cheif asks if I still want one. Score! Free bottle! So I start searching and I am finding out that I want C02 instead. Is this tank a lost cause or am I still going to get a usable amount of air when inflated to 2000 psi? Any help would be sweet, Baked:toothless