Tony Brown, 733d Civil Engineer Division Fort Eustis Fire Department firefighter, prepares to enter the stateroom of a mock-up vessel during a training exercise on Joint Base Langley-Eustis, Virginia, Nov. 9, 2020. The vessel included built-in fire and smoke machines, making for a training environment which was as realistic as possible. (U.S. Air Force photo by Staff Sgt. Joshua Magbanua)