The chance of mortality, including some minimal loss  to marine mammals is greatly outweighed by the need to have our military services  prepared to meet any aggression in the Pacific. Especially in today's climate of threats. The greenies and save the whale people need to put the critical needs of defense in perspective. NMFS and the U.S. Navy have made a thorough investigation into
impacts and concluded there will be no appreciable adverse impact to marine mammals, salmon, and critical habitat. That should put much of the concerns to rest.