World War II

It's chaos. Multiple ships are burning, sinking, or exploding. The California is still there. A burning Japanese Zero hits the bridge and explodes. In front of you, a guy takes several bullets in the back. To the right, a guy is gunned down while manning a .50 cal machine gun. Ahead is a set of stairs leading to another gun. To the left is an old Gunnery Sarge. He carries a BAR and a shotgun. What do you do?