The U.S. Supreme Court today lifted restrictions imposed by lower courts on the Navy's sonar training exercises off the California coast, dealing a blow to environmentalists who have argued that mid-frequency active sonar is harmful to whales. In a 6-3 decision, the court ruled that the need for realistic training, as judged necessary by military authorities, outweighed environmentalists' concerns. "The balance of equities and the public interest . . . tip strongly in favor of the Navy," the ruling states...