150711-N-GZ638-053 INDIAN OCEAN - Marines attached to the 31st Marine Expeditionary Unit board an MV-22 Osprey tiltrotor aircraft, assigned to Marine Medium Tiltrotor Squadron 265, for debarkation on the flight deck of forward-deployed amphibious assault ship USS Bonhomme Richard. Bonhomme Richard 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.