Gee I wish I could launch this thing in the air 500 feet and keep it up there for 16 seconds! How cool would that be!
Sorry to say, though, it won't have enough water in it to do anything quite that spectacular, even if all the safety measures failed and it did explode. There won't be any real reservoir of water in it, just what a piece of 3/8" of tubing can hold. Worse case scenario is that it would burst a line. It has a flash-tube boiler which is a coil of tubing. Pretty ho-hum actually. It's more like the instant water heater units that don't have a tank.