150429-N-IK337-024 PACIFIC OCEAN (April 29, 2015) Sailors aboard the aircraft carrier USS John C. Stennis (CVN 74) learn how to disassemble and reassemble a tail coupling for an MH-60R Sea Hawk helicopter. The ships comprising the John C. Stennis Carrier Strike Group are participating in a group sail exercise designed to develop coordinated capabilities. (U.S. Navy photo by Mass Communication Specialist Seaman Christopher Frost/Released)