Outside an underwater cave off the California coast, two divers unfurled a tough wirey net. A few moments later, a third diver emerged from the cave. Before he knew what was going on, he was deliberately emmeshed in the net. He wasn't released from it 'til he was dead. I didn't know the divers, and nobody knew what had happened, but I was on active duty with the Coast Guard at that time. I'm a member of the Coast Guard Auxiliary, and the death resulted in my being summoned to...