Virtually everything today is in one way or another a potential danger to U.S. national security. There are foreign terrorists, of course. Beyond that authorities cite drug cartels, downturns in the economy, espionage, street gangs, counterfeit goods, right-wing militias, left-wing environmentalists and the multiple personalities of Mother Nature. Beautiful Caribbean locales, on the other hand, face their own hazards. For the Virgin Islands, one of several U.S. territories many Americans forget have deep historical, political and economic ties to the mainland, it’s apparently adult beverages and “Puerto Rican terrorists” that together form a feasible threat. First, background. The story begins...