The U.S. Navy's 25th Naval Construction Regiment, based in Gulfport, Miss., is the command and control leader of Task Force Overlord (TFO) in Afghanistan. The task force is comprised of two Naval Mobile Construction Battalions, three Army Engineer Battalions, the Air Force Prime Beef and Red Horse engineer battalions, the Army Mine Dog Detachment and an Army firefighter detachment. TFO is responsible for construction engineering and engineering support in South, Southwest and West Afghanistan.