We used to have these huge Capacitors on the C-130 HN models they stored a crapload of voltage, we had to change a part out behind them and I told the guy make sure the power is off and discharge them before changing the box out, half hour later I hear over the radio "gunfire on the tarmac alert" Oh **** my guy is out there , well it was the capacitor discharging on his arm going off, he was blown back about ten feet and it sounded like a Gunshot! He was ok just out of it for a while, has a Frankenstein burn mark up his arm for life! Funny when it happened actually he was called Bang Bang after that one.