U.S. Air Force 2nd Lt. Spencer Nelson, 316th Civil Engineer Squadron requirements and optimization officer in charge, operates the bullpen phone during a Nationals Park facility exchange in Washington, D.C., Oct. 21, 2024. During the exchange, military members explored the press box, dugout, bullpen, and the visiting team clubhouse. (U.S. Air Force photo by Airman 1st Class Daniel Walderbach)