Factual error: When the little black kid tells D-Fens how to shoot the bazooka and asks where he is aiming it, D-Fens tells him "That big yellow monster down there" (i.e. a construction truck about a block down) and at this, the bazooka is pointed at the ground, and accidentally goes off. The shell "travels" through some pipe system and then blows up a block away. This is total fantasy. Had this been real, the shell would have exploded right there, killing everybody within about 20 feet.