Navy: Notification error led to Walter Reed shooter report

BETHESDA, Md. (AP) — A mass notification error led to reports of an active shooter Tuesday at Walter Reed National Military Medical Center outside Washington, the U.S. Navy said.In a statement, the Navy said that the Naval Support Activity Bethesda notification system was inadvertently activated while preparing for an upcoming drill, without the words "exercise" or "drill." People who saw the notification contacted security at the Maryland base, which launched an active shooter response.NS