Question: Bar Harbor is a town on Mount Desert Island in Hancock County, Maine, the town is served by the Hancock County-Bar Harbor Airport, which has flights on PenAir, and Hyannis Air Service, Inc., operating as Cape Air, is an airline headquartered at Barnstable Municipal Airport in Barnstable, Massachusetts, in which country? 
Context: Barnstable Municipal Airport (IATA: HYA, ICAO: KHYA, FAA LID: HYA) , also known as Boardman/Polando Field, is a public airport located on Cape Cod, one mile (1.6 km) north of the central business district of Hyannis, in Barnstable County, Massachusetts, United States.  This airport is publicly owned by Town of Barnstable.  It is Cape Cod's major airport as well as an air hub for the Cape and the Islands (Martha's Vineyard and Nantucket).  The airport is served by scheduled commercial flights as well as charters and general aviation.  Barnstable Municipal Airport served as a hub for Nantucket-based commuter airline Island Airlines until its shutdown in 2015. Bar Harbor is a town on Mount Desert Island in Hancock County, Maine, United States.  As of the 2010 census, its population is 5,235.  Bar Harbor is a popular tourist destination in the Down East region of Maine and home to the College of the Atlantic, Jackson Laboratory, and MDI Biological Laboratory (Salisbury Cove village).  Prior to a catastrophic 1947 fire, the town was a famous summer colony for the super-affluent elite.  Bar Harbor is home to the largest parts of Acadia National Park, including Cadillac Mountain, the highest point within twenty-five miles (40 km) of the coastline of the Eastern United States.  The town is served by the Hancock County-Bar Harbor Airport, which has flights on Cape Air and PenAir to Boston, as well as seasonal flights to Newark and Portland, ME on Elite Airways. Island Airlines was a commuter airline headquartered at Barnstable Municipal Airport in Barnstable, Massachusetts, United States which operated hourly scheduled flights between the island of Nantucket and Hyannis, Massachusetts.  Island Airlines (Hyannis) along with its sister company, Cape & Islands Air Freight, ceased operations on December 11, 2015. Trenton is a town in Hancock County, Maine, United States, near Acadia National Park.  The population was 1,481 at the 2010 census.  Hancock County-Bar Harbor Airport is located in Trenton. Mount Desert Island (often abbreviated MDI), in Hancock County, Maine, is the largest island off the coast of Maine.  With an area of 108 sqmi it is the 6th largest island in the contiguous United States.  It is the second-largest island on the Eastern seaboard, behind Long Island and ahead of Martha's Vineyard.  According to the 2010 census, the island has a year-round population of 10,615, although it is estimated that two and a half million tourists a year visit Acadia National Park on the island.  The island is home to numerous well-known summer colonies such as Northeast Harbor and Bar Harbor. Hyannis Air Service, Inc., operating as Cape Air, is an airline headquartered at Barnstable Municipal Airport in Barnstable, Massachusetts, United States.  It operates scheduled passenger services in the Northeast, the Caribbean, Midwest, Eastern Montana and Micronesia.  Flights in Micronesia are operated as United Express flights through a code share partnership with United Airlines.  Flights between Hyannis and Nantucket, Massachusetts, are operated under the Nantucket Airlines brand, also operated by Hyannis Air Service, Inc. Jill Goldthwait is an American politician from Maine.  Goldthwait grew up in New Jersey and obtained a degree in nursing in California.  She served a stint as a Peace Corps volunteer in Tonga.  She moved to Maine in 1978 and settled in Bar Harbor, Maine on Mount Desert Island.  She worked as an emergency room nurse at Mount Desert Island Hospital and served on the Bar Harbor Town Council for 9 years prior to running for Maine State Senate.  An unenrolled (independent), she won 4 terms (1994-2002) in the State Senate before being unable to run for re-election due to term-limits.  She then took a job with Jackson Laboratory in Bar Harbor, which later turned into a permanent position as Director of Government Relations.  In 2005, Goldthwait was named by Governor John Baldacci to the state's newly created Creative Economy Council. Barnstable ( ) is a city, referred to as the Town of Barnstable, in the U.S. state of Massachusetts and the county seat of Barnstable County.  Barnstable is the largest community, both in land area and population, on Cape Cod.  At the 2010 census it had a population of 45,193.  The town contains several villages (one of which is also named Barnstable) within its boundaries.  Its largest village, Hyannis, is the central business district of the county and home to Barnstable Municipal Airport, the airline hub of Cape Cod and the islands of Martha's Vineyard and Nantucket.  Additionally, Barnstable is a 2007 winner of the All-America City Award. State Route 198 (SR 198) is a state highway on Mount Desert Island, Hancock County, Maine.  It goes from the village of Northeast Harbor within the town of Mount Desert to State Routes 3 and 102 in Bar Harbor.  The route passes near the Gulf of Maine and through Acadia National Park. Hancock County-Bar Harbor Airport (IATA: BHB, ICAO: KBHB, FAA LID: BHB) is a county owned, public use airport located in Trenton, Maine, eight nautical miles (9 mi, 15 km) northwest of the central business district of Bar Harbor, a city in Hancock County, Maine, United States.  It serves the residents of Hancock County with commercial and charter aviation services.  During the summer months, the airport becomes one of Maine's busiest, with significant private jet operations bringing visitors to the numerous summer colonies in the county, which includes Mount Desert Island.  Scheduled passenger airline service is subsidized by the Essential Air Service program.
Answer: United States