The door began to shudder in its frame and make tremendous booming noises. 
Carl stepped forward and peered through the peephole; it was a couple of urban 
homeboy types having at it with a fire axe. He stepped away from the door, 
shrugging the rifle from his shoulder, levered in a shell, and fired it through 
the door, aiming away from the youths. The booming stopped abruptly, and they 
heard the head of the axe ringing like a bell as it fell to the pavement.