150710-N-TW634-799 INDIAN OCEAN (July 10, 2015) Chock and chain Sailors on the flight deck of the amphibious transport dock ship USS Green Bay (LPD 20) run as a Royal Australian Navy MRH-90 helicopter (s/n A40-029) prepares to take off. Green Bay is in the Indian Ocean participating in Talisman Sabre 2015. Talisman Sabre is a bilateral exercise intended to train Australian and U.S. forces in planning and conducting combined task force operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Derek A. Harkins/Released)