Staff Sgt. Preston Harris, 89th Aerial Port Squadron aircraft specialist, directs the loading of a U.S. Army truck into a C-17 Globemaster III at Joint Base Andrews, Md., April 15, 2015. Two generators and five pallets of cargo were loaded by 89 APS in support of a joint-military airlift operation to Romania. (U.S. Air Force photo/Airman 1st Class Philip Bryant)