Sept. 13, 2024 513th Expeditionary RED HORSE civil engineers innovate airfield runway construction, save $7.4 million Airmen with the 819th RED HORSE Squadron here deployed as the 513th Expeditionary RED HORSE Squadron to Andersen Air Force Base, Guam, and designed a new excavation technique for Air Force civil engineers that will save 162,000 tons of material, $7.4 million, and nearly 5,000 hours of labor.