U.S. Marines with 3rd Naval Gunfire Liaison Company, Force Headquarters Group, Marine Forces Reserve, coordinate close air support during a tactical air-control party (TACP) exercise at Rattlesnake Range, Hattiesburg, Mississippi, Dec. 3, 2025. TACP exercises prepare prospective joint terminal attack controllers and joint fires observers for formal schools. (U.S. Marine Corps photos by Lance Cpl. Payton Goodrich)