Larry, getting shot at with what? .50s? 20mm?
Put a few holes in a DT and you now have a fuel air mix, especially just behind the DT. Tracer or API into that fuel air mix and you can get a real sweet fire, on the OUTSIDE of a tank.
Getting one on the inside while possible, is a whole lot tougher. And its not going to happen with just a FMJ .50 round.