Marines assigned to the 31st Marine Expeditionary Unit, currently embarked on the amphibious transport dock ship USS Denver, load onto a CH-53E Super Stallion helicopter assigned to the Marine Medium Tiltrotor Squadron 265 during flight operations. Denver is assigned to Expeditionary Strike Group Seven and is participating in Exercise Ssang Yong, an annual combined exercise conducted by Navy and Marine forces with the Republic of Korea in order to strengthen interoperability across the range of military operations.