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A U.S. Marine Corps F-35B Lightning II from the Marine Fighter Attack Squadron 121, approaches the boom of a KC-135 Stratotanker from the 909th Air Refueling Squadron for an inflight refuel March 14, 2017, over the Pacific Ocean. The 909th ARS provides combat-ready KC-135 tanker aircrews to support peacetime operations and all levels of conflict in the Indo-Asia-Pacific theater.