Trying to sneak back on board ship at three o'clock in the morning following a heavy drinking session ashore, a sailor was dismayed to find the chief petty officer waiting for him. With the sailor unable to provide an acceptable excuse for his tardiness, he was issued with an immediate punishment. "Take this broom," ordered the CPO, "and sweep every link on this anchor chain by daybreak." The sailor picked up the broom and started to sweep but as he did so, a tern landed on the broom handle. The…