Question: The Armored Medical Research Laboratory was located at the Army post north of what town?
Context: Fort Knox is a United States Army post in Kentucky south of Louisville and north of Elizabethtown.  It is also the site of the United States Bullion Depository, which is used to house a large portion of the United States' official gold reserves.  The 109,000 acre (170 sq mi, 441 km²) base covers parts of Bullitt, Hardin, and Meade counties.  It currently holds the Army Human Resources Center of Excellence to include the Army Human Resources Command, United States Army Cadet Command and the United States Army Accessions Command. Naval Medical Research Unit Five (NAMRU-5) was a research laboratory of the US Navy which was founded as a field facility of Naval Medical Research Unit 3 in Addis Ababa Ethiopia with a collecting station in Gambella on December 30, 1965 under an agreement between the US and Ethiopian governments.  In 1974 NAMRU-5 was established as its own command and was housed in the Ethiopian Health and Nutrition Research Institute(former Imperial Central Laboratory Research Institute).  The mission of NAMRU-5 was to conduct research and development on infectious diseases of military importance in sub-Sahara Africa.  Gambella became the focus of a major malaria control effort and studies on malaria immunology.  Applied research focused on the general areas of insect repellents, insecticide resistance, insect attractants and louse control.  Members of the NAMRU-5 staff were also among the last Americans to ever see smallpox before its eradication.  NAMRU-5 built collaborative research efforts with the U.S. Centers for Disease Control and Prevention; with local medical facilities, including the Haile Selassie University Medical School and various hospitals in Addis Ababa; and with the London School of Tropical Medicine, the University of Washington, Case Western Reserve University Department of Medicine and the University of Maryland School of Medicine.  NAMRU-5 was disestablished in April 1977 following the communist takeover of the government of Ethiopia which ordered all members out of the country in 4 days. The Armored Medical Research Laboratory (AMRL) was a U.S. Army medical research facility maintained at Fort Knox, Kentucky from 1942 to 1961 to solve environmental problems encountered by soldiers in tanks. The U.S. Army Pikes Peak Research Laboratory, or simply the “Pikes Peak Lab”, is a modern medical research laboratory for the assessment of the impact of high altitude on human physiological and medical parameters of military interest.  It is a satellite facility of the U.S. Army Research Institute of Environmental Medicine (USARIEM), located in Natick, Massachusetts. The Naval Submarine Medical Research Laboratory (NSMRL) is located on the New London Submarine Base in Groton, Connecticut.  The laboratory's mission is to protect the health and enhance the performance of United States War Fighters through focused submarine, diving, and surface research solutions.  It is a subordinate command of the Naval Medical Research Center. Naval Medical Research Unit Two (NAMRU-2) is a biomedical research laboratory of the US Navy established with the purpose to study infectious diseases of potential military significance in Asia.  NAMRU-2 is officially registered as a subordinate command of Naval Medical Research Center located on Silver Spring, Maryland, U.S. and considered as the center network of laboratories around the world. The Westmead Institute for Medical Research is a large medical research institute located at Westmead in Sydney's western suburbs.  The institute is closely affiliated with Sydney Medical School and Westmead Hospital and comprises approximately 450 medical research and support staff.  Originally named the Westmead Millennium Institute for Medical Research, the institute was founded in 1996 through the merging of five research groups at the Westmead health campus, initially comprising just 40 medical researchers, and was renamed on 18 November 2015.  The Westmead Institute has grown rapidly on the basis of peer-reviewed funding. Naval Medical Research Unit One was a research laboratory of the US Navy which was founded as Naval Laboratory Research Unit 1, a Naval Reserve Unit at the University of California Berkeley in the life sciences building in 1934 after a campaign by a Berkeley scientist Albert P. Krueger to the Bureau of Medicine and Surgery to have a laboratory to study and prevent influenza and respiratory infections in naval forces.  It was mobilized as an active duty naval unit in 1941 to study the epidemiological impact of diseases such as influenza, meningitis, and catarrhal fever, as well as tropical diseases such as malaria on the US Navy during World War II. Naval Medical Research Unit Three (NAMRU-3) is a biomedical research laboratory of the US Navy located in Cairo, Arab Republic of Egypt.  NAMRU-3 is the oldest US overseas military medical research facility that has remained in the same location, and one of the largest medical research laboratories in the North Africa-Middle East region.  The laboratory has been in continuous operation despite periods of political tension and a seven-year lapse in U.S.-Egyptian relations (1967–1973) since 1942. The Army Research Laboratory (ARL) is the U.S. Army's corporate research laboratory.  ARL is headquartered at the Adelphi Laboratory Center (ALC) in Adelphi, Maryland.  Its largest single site is at Aberdeen Proving Ground, Maryland.  Other major ARL locations include Research Triangle Park, North Carolina, White Sands Missile Range, New Mexico, Orlando, Florida, and NASA's Glenn Research Center, Ohio and Langley Research Center, Virginia.
Answer: Elizabethtown