Firing a BAR, Italian 10.4mm Vetterli-Vitali leaning against the tree.
Firing a machine gun from a Japanese Zero, mounted on a tripod. Vince DiNardi, who assembles the vast quantities of ammunition used, feeds the belt.
Firing the Japanese "knee" mortar (non-explosive shells of course). Every year Vince makes a number of practice rounds for the "knee" mortar so people can actually shoot one.