Three sailors in Japan have been charged with spilling military secrets in a smut-swapping scandal that could reach up the navy's chain of command. The secrets involve an American ship-based missile shield. Pornography may be a sin, but when did anyone say it was a threat to national security? Three Japanese sailors have swapped military secrets along with smutty images, according to charges pressed last week by Japanese police. The scandal involves lower-ranking men but could reach higher into the navy's chain of command, and it's especially embarrassing for Tokyo because the leak has compromised an American-designed anti-missile system. A...