The Laws of Body InflationLaw of Pneumatic Economy: Compressed gasses are so cheap as to be practically free. Thus various people and organizations who have no particular reason to keep tanks of compressed gas around do so just in case they're needed someday.The Laws of Body Inflation by ~LutherVKane
Law of Containment Durability: Devices which are designed to contain or convey compressed gasses (tanks, hoses, pumps, etc) are made from highly durable materials and engineered to a level suitable for high-end aerospace applications. As such, they will never fail even when under extreme stress and operating well outside of their design specifications.
Law of Excess Capacity: Because compressed gasses are f