Marine Corps Air Station Iwakuni, Japan

A Sikorsky S-76 search-and-rescue helicopter lowers medical personnel during a SAR training exercise onto Royal Australian Air Force Base Tindal, Australia, during Exercise Southern Frontier 2014, June 11. Southern Frontier is an annual bilateral training exercise between the RAAF and the United States Marine Corps with a primary focus on offensive air support and enhancing military interoperability. - A Sikorsky S-76 search-and-rescue helicopter lowers medical personnel during a SAR training exercise onto Royal Australian Air Force Base Tindal, Australia, during Exercise Southern Frontier 2014, June 11. Southern Frontier is an annual bilateral training exercise between the RAAF and the United States Marine Corps with a primary focus on offensive air support and enhancing military interoperability.