Piedmont Triad International Airport and Aniak Airport, are located in which country?
Piedmont Triad International Airport: Piedmont Triad International Airport (IATA: GSO, ICAO: KGSO, FAA LID: GSO) (commonly referred to as "PTI") is an airport located in the center of North Carolina just west of Greensboro, serving Greensboro, High Point and Winston-Salem as well as the entire Piedmont Triad region in North Carolina. Aniak Airport: Aniak Airport (IATA: ANI, ICAO: PANI, FAA LID: ANI) is a state owned, public use airport located in Aniak, a city in the Bethel Census Area of the U.S. state of Alaska.
U.S.