Lol, few trainings ago, the gauge front (leaky gauge/plastic cover bit) popped off my tank, so was pissing out air, so i took out the macroline from the asa to empty the tank... while i was doing this, a team mate, went and got a flash bang, light it, and placed it behind me ... scared the absolute bejesus outa me........*chronic fear of air leaks / explosions*
hope that helps
-james