Service members from several partner nations sit atop the flight deck during the closing ceremony of Exercise Talisman Saber 17 aboard the USS Ronald Reagan (CVN 76), ported in Brisbane, Queensland, Australia, July 25, 2017. - U.S. Navy Adm. Scott Swift, commander of U.S. Pacific Fleet, speaks during the closing ceremony marking the end of Exercise Talisman Saber 17 aboard the USS Ronald Reagan (CVN 76), ported in Brisbane, Queensland, Australia, July 25, 2017. Talisman Saber is a biennial exercise designed to improve the interoperability between Australian and U.S. forces. The 31st MEU is taking part in Talisman Saber 17 while deployed on a regularly-scheduled patrol of the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Staff Sgt. T. T. Parish/Released)

A Marine assault amphibious vehicle mechanic with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, cleans a piece of equipment aboard the USS Ashland (LSD 48) while underway in the Pacific Ocean, July 17, 2017. - A Marine assault amphibious vehicle mechanic with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, cleans a piece of equipment aboard the USS Ashland (LSD 48) while underway in the Pacific Ocean, July 17, 2017. The AAV mechanics are currently supporting Exercise Talisman Saber 17, a biennial exercise designed to improve the interoperability between Australian and U.S. forces. The 31st MEU is taking part in Talisman Saber 17 while deployed on its regularly-scheduled patrol of the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Cpl. Amaia Unanue/ Released)

Marines with Kilo Company, Battalion Landing Team, 3rd Battalion, 5th Marines, board an MV-22B Osprey tiltrotor aircraft during Exercise Talisman Saber 2017 aboard the USS Bonhomme Richard (LHD-6) while at sea in the Pacific Ocean, July 8, 2017. - Marines with Kilo Company, Battalion Landing Team, 3rd Battalion, 5th Marines, board an MV-22B Osprey tiltrotor aircraft during Exercise Talisman Saber 2017 aboard the USS Bonhomme Richard (LHD-6) while at sea in the Pacific Ocean, July 8, 2017. Talisman Saber is a biennial exercise designed to improve the interoperability between Australian and U.S. forces. BLT 3/5, the Ground Combat Element of the 31st Marine Expeditionary Unit, is exploring state-of-the-art concepts and technologies as the dedicated force for Sea Dragon 2025, a Marine Corps initiative to prepare for future battles. The 31st MEU is taking part in Talisman Saber while deployed on its regularly-scheduled patrol of the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Lance Cpl. Breanna L. Weisenberger/Released)