|The following is based on Fallout Tactics and some details might contradict canon.|
The most devastating weapon of group attack. It destroys almost anything in one shot but the ammunition is very rare. Having to keep the tank in good condition makes this weapon hard to use continuously.
The main thing about this gun is its usage of driver's Big Gun skill. If the shooter shoots this cannon, the message will report that is the driver's name shooting. But if the shooter shoots their personal weapon, the message will report the shooter's name.
On the tank, which is located in Newton, used only by the second passenger.