Question: Memphis International Airport and Norfolk International Airport, are located in which country?

full_context: Document 1: Memphis International Airport: Memphis International Airport (IATA: MEM, ICAO: KMEM, FAA LID: MEM) is a civil-military airport seven miles (11.2 km) southeast of downtown Memphis in Shelby County, Tennessee, United States.
Document 2: Worcester Regional Airport: Worcester Regional Airport (IATA: ORH, ICAO: KORH, FAA LID: ORH) is a public commercial airport located three miles (5 km) west of the central business district of Worcester, a city in Worcester County, Massachusetts, United States. The main property lies within municipalities of Worcester and Leicester, with substantial supporting facilities in adjacent Paxton. Once owned by the municipal administration of the City of Worcester, the airport has been owned and operated by the Massachusetts Port Authority (Massport) since June 2010.
Document 3: Roanoke–Blacksburg Regional Airport: Roanoke–Blacksburg Regional Airport (IATA: ROA, ICAO: KROA, FAA LID: ROA) , also known as Woodrum Field, is a regional airport located three nautical miles (6 km) northwest of the central business district of Roanoke, a city in Roanoke County, Virginia, United States. It is governed by the five-member Roanoke Regional Airport Commission that includes representatives from both the city and county of Roanoke. The airport has two runways and over 60 scheduled flights each day.
Document 4: Naval Station Norfolk: Air Operations conducts over 100,000 flight operations each year, an average of 275 flights per day or one every six minutes. Over 150,000 passengers and 264,000 tons of mail and cargo depart annually on Air Mobility Command (AMC) aircraft and other AMC-chartered flights from the airfield's AMC Terminal.
Document 5: Virginia State Route 165: State Route 165 (SR 165) is a primary state highway in the U.S. state of Virginia. The state highway runs 39.75 mi from U.S. Route 17 Business (US 17 Business) in Chesapeake north to SR 337 in Norfolk. SR 165 is a C-shaped route that connects Chesapeake and Norfolk in the Hampton Roads metropolitan area indirectly via Virginia Beach. The highway's east–west segment connects the Chesapeake communities of Deep Creek and Great Bridge with the Princess Anne part of Virginia Beach. SR 165's northwest–southeast portion connects the Princess Anne area with Virginia Beach's Salem and Kempsville communities and with Norfolk. Within Norfolk, the state highway parallels Interstate 64 (I-64) while passing through the eastern and northern areas of the city near Norfolk International Airport and Naval Station Norfolk. Much of SR 165 is a multi-lane divided highway, but there are significant two-lane stretches in all three of the independent cities the highway serves.
Document 6: Economy of Memphis, Tennessee: Located on the Mississippi River, Memphis is one of the largest metropolitan areas in the Southeast, ranking 41st out of the top 75 according to a Department of Labor Release. Of the 40 metropolitan areas ahead of Memphis, only 12 are in the South, according to the Census definition The city has historically been one of the largest shipping hubs in the Mid-South, dating back to the Civil War, when the port was one of the largest on the Mississippi River and served as a shipping hub for the Confederacy.
Document 7: FedEx Express Flight 630: FedEx Flight 630 was a regular scheduled cargo flight from Seattle-Tacoma International Airport to Memphis International Airport, Memphis, Tennessee. On July 28, 2006, the McDonnell Douglas MD-10-10F
Document 8: Norfolk Regional Airport: Norfolk Regional Airport (IATA: OFK, ICAO: KOFK, FAA LID: OFK) (Karl Stefan Memorial Field) is four miles southwest of Norfolk, in Madison County, Nebraska. The airport is named for Karl Stefan, a local newspaper editor and radio announcer who served several terms in the United States Congress. Until March 2011 it was known as Karl Stefan Memorial Airport. The FAA's National Plan of Integrated Airport Systems for 2011–2015 categorized it as a "general aviation" facility.
Document 9: Capleville, Tennessee: Capleville is an unincorporated community in Shelby County, Tennessee, United States, southeast of Memphis and just north of the Mississippi border. It is located 0.5 mi. east of the Memphis International Airport, starting 1 mi. west of the intersection of State Routes 176 and 175, and heading east along State Route 175 (Shelby Drive) crossing U.S. Route 78. Most of the area has been incorporated into the City of Memphis and since has become a large industrial center due to its proximity to the airport and Lamar Avenue (U.S. Route 78) which becomes a divided freeway after State Route 175.
Document 10: Minneapolis–Saint Paul International Airport: Minneapolis–Saint Paul International Airport (IATA: MSP, ICAO: KMSP, FAA LID: MSP) , also known as Wold–Chamberlain Field, is a joint civil-military public use international airport. Located in a portion of Hennepin County, Minnesota, United States, outside of any city or school district, within 10 miles (16 km) of both downtown Minneapolis and downtown Saint Paul, it is the largest and busiest airport in the six-state Upper Midwest region of Minnesota, Iowa, Nebraska, North Dakota, South Dakota, and Wisconsin.
Document 11: Newport News/Williamsburg International Airport: Newport News/Williamsburg International Airport (IATA: PHF, ICAO: KPHF, FAA LID: PHF) is an airport located in Newport News, Virginia, and serves the Hampton Roads metropolitan area along with Norfolk International Airport in Norfolk. The airport is owned and operated by the Peninsula Airport Commission, which is a political subdivision of the Commonwealth of Virginia.
Document 12: Elizabeth City Regional Airport: Elizabeth City Regional Airport (IATA: ECG, ICAO: KECG, FAA LID: ECG) is a joint civil-military public and military use airport located three nautical miles (6 km) southeast of the central business district of Elizabeth City, in Pasquotank County, North Carolina, United States. The airport, on the shore of the Pasquotank River, is also known as Elizabeth City-Pasquotank County Regional Airport or ECG Regional Airport. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a "general aviation" facility.
Document 13: Norfolk International Airport: Norfolk International Airport (IATA: ORF, ICAO: KORF, FAA LID: ORF) is a public use airport located three nautical miles (6 km) northeast of the central business district of Norfolk, an independent city in the U.S. state of Virginia. It is owned by the city of Norfolk and operated by the Norfolk Airport Authority: a bureau under the municipal government. The airport serves the entire Hampton Roads metropolitan area of southeast Virginia (along with Newport News/Williamsburg International Airport in Newport News) as well as northeast North Carolina.
Document 14: Millington Regional Jetport: Millington Regional Jetport (IATA: NQA, ICAO: KNQA, FAA LID: NQA) , formerly known as Millington Municipal Airport, is a public airport in the city of Millington, in Shelby County, Tennessee, USA. The airport is located 16 mi north of Memphis. It was formerly known as Naval Air Station Memphis and it still provides support to military aircraft visiting the adjacent Naval Support Activity Mid-South.
Document 15: Minneapolis–Saint Paul International Airport: Minneapolis–Saint Paul International Airport (IATA: MSP, ICAO: KMSP, FAA LID: MSP) , also known as Wold–Chamberlain Field, is a joint civil-military public use international airport. Located in a portion of Hennepin County, Minnesota, United States, outside of any city or school district, within 10 miles (16 km) of both downtown Minneapolis and downtown Saint Paul, it is the largest and busiest airport in the six-state Upper Midwest region of Minnesota, Iowa, Nebraska, North Dakota, South Dakota, and Wisconsin.
ground_truth: United States