150305-N-IK337-012 BERMERTON, Wash. (March 5, 2015) Sailors participate in the Navy-wide E-6 advancement exam aboard the aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is undergoing an operational training period in preparation for future deployments. (U.S. Navy Photo by Mass Communication Specialist Seaman Christopher Frost/Released)