U.S. Army Spc. Miguel Ruelas Trejo, 335th Transportation Detachment, 7th Transportation Brigade (Expeditionary) quartermaster, makes an announcement over the intercom to members aboard General Frank S. Besson-class logistics support vessel at Joint Base Langley-Eustis, Va., June 23, 2017. As a quartermaster, Ruelas Trejo keeps track of crew lists, manages the navigation charts and maintains the ship’s logs. (U.S. Air Force photo/Airman 1st Class Kaylee Dubois)