Question: Provincetown Municipal Airport and General Mitchell International Airport, are located in which country?
Context: United Airlines Flight 266 was a scheduled flight from Los Angeles International Airport, California, to General Mitchell International Airport, Milwaukee, Wisconsin via Stapleton International Airport, Denver, Colorado with 38 on board.  On January 18, 1969 at approximately 18:21 PST it crashed into Santa Monica Bay, Pacific Ocean, about 11.5 miles west of Los Angeles International Airport, four minutes after takeoff. The Mitchell Gallery of Flight is an aviation museum located inside General Mitchell International Airport in Milwaukee, Wisconsin in the United States. New Coeln (also called New Koeln and New Köln) is a neighborhood, formerly a rural hamlet in the Town of Lake of Milwaukee County, Wisconsin, but now part of Milwaukee, Wisconsin.  It was settled by a group of German immigrants from the area around Cologne (German "Köln") in the 1840s.  By 1847, there were about fifty settlers, and a new Catholic parish, St. Stephen's, was formed.  The portion of the former settlement west of Howell Avenue is now part of the grounds of General Mitchell International Airport, but the inn known variously as Deuster's Saloon, New Coeln House, and the New Coeln House Dancehall is still open (currently branded as the Landmark 1850 Inn), and is on the National Register of Historic Places. Giving Gifts is a work of public art by Evelyn Patricia Terry located in the parking structure at General Mitchell International Airport on the south side of Milwaukee, Wisconsin.  The artwork, a lattice of painted metal, was commissioned by the Milwaukee County Percent for Art Program. State Trunk Highway 119 (often called Highway 119, STH 119 or WIS 119), better known as the "Airport Spur", is a connector freeway in Milwaukee, Wisconsin.  The 1.89 mi freeway connects Interstate Highway 94 to General Mitchell International Airport.  STH 119 has had many different iterations dating back to 1919, and since has had five other variations including the modern day route.  These different roads were short lived but were located throughout the state of Wisconsin in the Milwaukee area, Manitowoc and Green Bay. The Milwaukee Airport Railroad Station is an Amtrak railway station which opened for service on January 18, 2005.  It is located at 5601 South 6th Street, just south of Wisconsin Highway 119, near the western edge of General Mitchell International Airport in Milwaukee, Wisconsin, United States.  The facility accommodates travelers who use the "Hiawatha Service" between Chicago Union Station and the Milwaukee Intermodal Station, and sees fourteen daily arrivals, seven each from Milwaukee and Chicago.  There is a shuttle from the station to the terminal of Mitchell Airport. Mississippi Valley Airlines (IATA--XV), was a regional air carrier serving the Upper Midwestern region of the United States.  It was founded as Gateway Aviation, and had its headquarters in La Crosse, Wisconsin.  It began scheduled flight operations on July 22, 1968 between La Crosse Municipal Airport and both Chicago (O'Hare International Airport) and Milwaukee (General Mitchell International Airport).  The carrier changed its name to Mississippi Valley Airways in October 1969.  It became Mississippi Valley Airlines (MVA) and moved its headquarters to Quad City Airport in Moline, Illinois in January 1982.  The airline merged into Air Wisconsin in 1985. Hiawatha Service, or Hiawatha, is the name of an 86-mile (138 km) train route operated by Amtrak on the western shore of Lake Michigan, although the name was historically applied to several different routes that extended across the Midwest and out to the Pacific Ocean.  As of 2007, fourteen trains (seven round-trips, six on Sunday) run daily between Chicago, Illinois, and Milwaukee, Wisconsin, making intermediate stops in Glenview, Illinois, Sturtevant, Wisconsin, and General Mitchell International Airport.  The line is partially supported by funds from the state governments of Wisconsin and Illinois. General Mitchell International Airport (IATA: MKE, ICAO: KMKE, FAA LID: MKE) is a civil-military airport five miles (8 km) south of downtown Milwaukee, Wisconsin, United States.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a medium-hub primary commercial service facility. Provincetown Municipal Airport (IATA: PVC, ICAO: KPVC, FAA LID: PVC) is a public airport located at the end of Cape Cod, two miles (3 km) northwest of the central business district of Provincetown, a town in Barnstable County, Massachusetts, United States.  This airport is operated by the Town of Provincetown on land leased from the U.S. National Park Service.
Answer: United States