Campbell Army Airfield (IATA: HOP, ICAO: KHOP, FAA LID: HOP) is a military airport at Fort Campbell, which is located near Hopkinsville, a city in Christian County, Kentucky, United States. Previously Campbell Air Force Base, a U.S. Air Force installation from 1947 to 1959, this U.S. Army airfield has two asphalt paved runways: 5/23 is 11,826 by 200 feet (3,605 x 61 m) and 18/36 is 4,500 by 150 feet (1,372 x 46 m). The airfield currently houses UH-60, CH-47, AH-64, and OH-58 helicopters of the 101st Combat Aviation Brigade and MH-60, MH-47, and MH-6 helicopters of the 160th SOAR. It is also home to elements of the 159th Combat Aviation Brigade. Before 2004, all the 101st Airborne Division's Chinooks were in 7th Battalion, 101st Aviation Regiment, and the specialized hangar for those aircraft was built on CAAF.