150714-N-YD641-136 TIMOR SEA Boatswain's Mate 3rd Class Jacob Griffith, from Pomona, Calif., trips the pelican hook during a fueling at sea between the Nimitz-class aircraft carrier USS George Washington and Military Sealift Command Fleet replenishment oiler USNS Rappahannock as part of Talisman Sabre 2015. Talisman Sabre is a biennial exercise that provides an invaluable opportunity for nearly 30,000 U.S. and Australian Defence Force personnel to conduct operations in a combined, joint and interagency environment that will increase both countries' ability to plan and execute a full range of operations from combat missions to humanitarian assistance efforts.