The 315th Airlift Wing is a unit within the United States Air Force Reserves, based at Joint Base Charleston in South Carolina. The primary mission of the 315th Airlift Wing is to provide global airlift capabilities in support of various U.S. military operations and humanitarian efforts. The Wing operates C-17 Globemaster III aircraft, which are used to transport troops, supplies, and equipment to locations around the world. In addition to its operational missions, the 315th Airlift Wing also plays a key role in training and preparing reserve forces for their roles in national defense.