Peter Taylor, 733d Civil Engineer Division Fort Eustis Fire Department lieutenant, exits a hatch on a mock-up vessel during a training exercise on Joint Base Langley-Eustis, Virginia, Nov. 9, 2020. In smoke-filled environments where visibility is reduced, firefighters rely on technological equipment, their teammates and their other senses to navigate through a burning area. (U.S. Air Force photo by Staff Sgt. Joshua Magbanua)