Defense Environment Alert -- The Navy last week rejected a high-ranking senator's request that the military quickly settle a lawsuit brought by environmentalists, instead filing an appeal to overturn a lower court ruling that temporarily halts the service's use of mid-frequency active (MFA) sonar in training exercises slated to take place off the Southern California coast. The lower court's ruling came in response to a lawsuit aimed at preventing harm to marine mammals from MFA sonar. The Navy decided to...