Question: Which of the following airports hosts Peterson Air Force Base as a tenant: Newark Liberty International Airport or Colorado Springs Airport?
Context: Peterson Air and Space Museum is located inside Peterson Air Force Base, Colorado Springs, Colorado.  Admission to the museum is free, but access is controlled due to security concerns.  The Museum has various aircraft, mainly focusing on the Cold War roles of USAF Air Defense Command (ADC), and Aerospace Defense Command (ADCOM). , and currently, Air Force Space Command (AFSpC). The Cheyenne Mountain Complex is a military installation and nuclear bunker located in Colorado Springs, Colorado at the Cheyenne Mountain Air Force Station, which hosts the activities of several tenant units.  Also located in Colorado Springs is Peterson Air Force Base, where the North American Aerospace Defense Command (NORAD) and United States Northern Command (USNORTHCOM) headquarters are located. AirTrain Newark is a 3-mile (4.8 km) monorail system connecting the terminals at Newark Liberty International Airport (EWR) and trains at Newark Liberty International Airport Station on the Northeast Corridor (NEC), where transfers are possible to Amtrak and New Jersey Transit's Northeast Corridor Line and North Jersey Coast Line Peterson Air Force Base is a U.S. Air Force Base that shares an airfield with the adjacent Colorado Springs Municipal Airport, also having the North American Aerospace Defense Command (NORAD) and United States Northern Command (USNORTHCOM) headquarters.  Developed as a World War II air support base for Camp Carson, the facility conducted Army Air Forces training and supported Cold War air defense centers at the nearby Ent Air Force Base, Chidlaw Building, and Cheyenne Mountain Complex.  The base has been the location of the Air Force Space Command headquarters since 1987 and has had NORAD/NORTHCOM command center operations since the 2006 Cheyenne Mountain Realignment placed the nearby Cheyenne Mountain Complex centers on standby. The Federal Building, originally the Burroughs Building, was a Cold War military computer systems building on the Ent Air Force Base in Colorado Springs.  It was built in 1962 to be used by Burroughs Corporation for its project to build an automated facility to take input, like satellite and radar information, and instantaneously assess its degree of combat importance.  The program was designed in conjunction with Air Force 425L System Project engineers and was an important component in North American Aerospace Defense Command (NORAD)'s command and control system.  It was an Ent Air Force Base building until 1975 when the base was inactivated.  It then became an off-base installation to the Peterson Air Force Base.  Over the next several decades there were varying uses for the building by the federal government.  After 2007, the building was vacated and in 2009 it was sold. City of Colorado Springs Municipal Airport (IATA: COS, ICAO: KCOS, FAA LID: COS) (also known as Colorado Springs Airport) is a city-owned public civil-military airport 6 mi southeast of Colorado Springs, in El Paso County, Colorado.  It is the second busiest commercial service airport in the state.  Peterson Air Force Base, which is located on the north side of runway 13/31, is a tenant of the airport. The 6th Air Intelligence is an inactive unit of the United States Air Force.  Its last assignment was with Seventh Air Force, stationed at Osan Air Base, Korea.  It was inactivated in 1993.  The unit was originally established at Army Air Base, Colorado Springs, Colorado (later Peterson Air Force Base) as the 6th Photographic Group on 5 February 1943, under the command of Lt Waymond Davis.  Later that year, the unit was redesignated the 6th Reconnaissance Group and deployed to the southwest Pacific as a component of the Fifth Air Force. The 7th Space Warning Squadron (7th SWS) guards the U.S. West Coast against sea-launched ballistic missiles from the eastern outskirts of Beale Air Force Base approximately 8 mi east of Marysville, California.  The 7th SWS is a geographically separated unit of the 21st Space Wing, Peterson Air Force Base, Colorado Springs, Colorado. Newark Liberty International Airport Station (also known as Newark International Airport Station) is a railroad station on the Northeast Corridor (NEC) in Newark, New Jersey.  The station provides access to Newark Liberty International Airport (EWR) via the AirTrain monorail which connects the station to the airport's terminals and parking areas.  It is served by New Jersey Transit's (NJT) Northeast Corridor Line and North Jersey Coast Line and Amtrak's "Northeast Regional" and Keystone Service trains.  The station, located in the Dayton neighborhood of the city, has no pedestrian access, bus service, parking facility, or drop-off area. Newark Liberty International Airport (IATA: EWR, ICAO: KEWR, FAA LID: EWR) , originally Newark Metropolitan Airport and later Newark International Airport, is the primary airport serving the U.S. state of New Jersey.  The airport straddles the boundary between the cities of Elizabeth and Newark, the latter of which is the most populous city in the state.  The airport is owned jointly by the cities of Elizabeth and Newark and leased to and operated by the Port Authority of New York and New Jersey.
Answer: Colorado Springs Municipal Airport