Starting tomorrow, 18,700 military personnel from the United States, Germany, the United Kingdom, the Netherlands and Canada will participate in "Roving Sands '00," which the Army bills as the world's largest air and missile defense training exercise. Despite that billing, the annual event has been scaled down in scope from prior years. "RS 00 combines the command, control, communications and computer elements and air defense artillery and aircraft of the (U.S.) Army, Air Force, Marines, Navy and multinational forces into...