150713-N-BX824-133 TIMOR SEA The Nimitz-class aircraft carrier USS George Washington is underway in the Timor Sea in support of Talisman Sabre 2015. TS 15 is a biennial exercise that provides an invaluable opportunity for nearly 30,000 U.S. and Australian Defence Forces 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.