That is a bit questionable, c5rulz. It may have been leased all those ages ago, though in those times (20+ years ago) the tanks were purchased also, which one can do still today. Even though I had all the information from the previous owner/lessee's(?) son since the original was dead, Airgas did not have any documentation that the tanks were leased nor did they have any information of the guy himself. The main reason Airgas didn't want anything to do with the tanks was that the certification of the integrity was way out of date. They wanted me to pay for that recertification then give me new filled tanks. I saw that as an end around method of getting a new lease agreement to which I didn't agree to.