TONIGHT we review the one and only Horror film created by master filmmaker Barry Levinson - of RAIN MAN and GOOD MORNING, VIETNAM. It's as political as his other less famous films tend to be: during July 4th celebration, a mysterious illness breaks out in Chesapeake Bay Area - killing thousands. And that's just the beginning. . . From this simple description, one would never know that they were about to watch one of the most terrifying modern horror films ever.