150427-N-GZ947-047 PACIFIC OCEAN - USS Freedom conducts replenishment at sea training with the USS John C. Stennis. U.S. Navy ships are underway conducting an Independent Deployer Certification Exercise in the Southern California Operating Area. The exercise provides a multi-ship environment to train and certify independent deployers in surface warfare, air defense, maritime interception operations, command and control/information warfare, command, control, computers and combat systems intelligence and mine warfare.