Question:  At which airport is this airline headquartered, which provide Rutland–Southern Vermont Regional Airport with commercial service?

Context paragraphs:
Rutland–Southern Vermont Regional Airport: Rutland – Southern Vermont Regional Airport (IATA: RUT, ICAO: KRUT, FAA LID: RUT) , is a state-owned, public use airport located five nautical miles (6 mi, 9 km) south of the central business district of Rutland, a city in Rutland County, Vermont, United States.  Situated in North Clarendon, it was formerly known as Rutland State Airport.  Scheduled commercial service is subsidized by the Essential Air Service and provided by Cape Air, with three flights daily on nine-passenger Cessna 402 aircraft to Boston with typical flight times of 40 minutes.

Asheville Regional Airport: Asheville Regional Airport (IATA: AVL, ICAO: KAVL, FAA LID: AVL) is a Class C airport near Interstate 26 near the town of Fletcher, 9 mi south of downtown Asheville, in the U.S. state of North Carolina, United States.  It is owned by the Greater Asheville Regional Airport Authority.  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 non-hub primary commercial service facility.  In 2016 it served an all-time record number of passengers for the airport, 826,648, an increase of 5% over 2015 and the third consecutive year of record traffic.

Pellston Regional Airport: Pellston Regional Airport (IATA: PLN, ICAO: KPLN, FAA LID: PLN) , also known as Pellston Regional Airport of Emmet County, is a public airport located one mile (2 km) northwest of the central business district of Pellston, a village in Emmet County, Michigan, 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 non-hub primary commercial service facility.

Bennington, Vermont: Bennington is a town in Bennington County, Vermont, in the United States.  It is one of two shire towns (county seats) of the county, the other being Manchester.  The population is 15,431, as of 2014 US Census estimates.  Bennington is the most populous town in southern Vermont, the third-largest town in Vermont (after Essex and Colchester) and the sixth-largest municipality in the state including the cities of Burlington, Rutland, and South Burlington in the count.

Vermont Route 9: Vermont Route 9 (VT 9) is a state highway in the U.S. state of Vermont.  The highway runs 46.957 mi from the New York state line in Bennington, where it continues west as New York Route 7 (NY 7), to the New Hampshire state line at the Connecticut River in Brattleboro, where the highway continues as New Hampshire Route 9 (NH 9).  VT 9 is the primary east–west highway of Bennington and Windham counties in southern Vermont.  The highway connects Southern Vermont's primary towns of Bennington and Brattleboro via its crossing of the Green Mountains.  VT 9 also connects those towns with Troy, New York, and Keene, New Hampshire, via the connecting highways in those states.  The highway also intersects three major north–south routes: U.S. Route 7 (US 7) in Bennington and Interstate 91 (I-91) and US 5 in Brattleboro.

Texas Sky: Texas Sky Public Charters is a regional charter brand of Public Charters, Inc., an airline headquartered in Avoca, Pennsylvania.  It flies between Victoria Regional Airport, Dallas/Fort Worth International Airport, and Del Rio International Airport.  Flights to Victoria are subsidized under the Alternative Essential Air Service program.  Victoria is the second airport in the United States to receive subsidy under the Alternative program.  Texas Sky announced it will begin air service to Del Rio, Texas and resume service to Dallas/Fort Worth in 2017.

Vermont Translines: Vermont Translines is an intercity bus company founded by its parent company, charter bus company Premier Coach, in 2013.  The bus company mainly serves the US Route 7 and US Route 4 corridors in the New England state of Vermont.  Aided by $400,000 in annual federal grant money disbursed by the Vermont Agency of Transportation, the company also utilizes Greyhound's ticketing system and connects with other Greyhound bus routes, primarily in Burlington, Albany and White River Junction.  Service on two routes between Burlington, Vermont and Albany, New York and between Rutland, Vermont and Dartmouth-Hitchcock Medical Center in Lebanon, New Hampshire officially began June 9, 2014, with intermediate stops at towns and cities between.  The restart of intercity bus service for places like Rutland marked the first time some places along the current routes had seen any intercity bus service at all since Greyhound left Rutland in 2008, and in towns like Bennington since 2005.

Cape Air: 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.

Vermont Route 103: Vermont Route 103 (abbreviated VT 103) is a north–south state highway in southern Vermont, United States.  It runs from Rockingham in the east to Clarendon near Rutland in the west.  The Vermont Country Store's second branch is one attraction along the route, as well as the Okemo Ski Resort in Ludlow.

Marble Valley Regional Transit District: Marble Valley Regional Transit District (MVRTD) operates a public transportation system in Rutland County, Vermont called The Bus.  The company currently has full bus service to Rutland and West Rutland, as well as limited daily bus service to Castleton, Fair Haven, Poultney and Killington.  Limited weekday service is available to Ludlow and Proctor.  It also provides weekday and Saturday service to Middlebury and Manchester, Vermont.  The Bus also operates paratransit and Medicaid Transportation services for Rutland County.

Supporting paragraphs: Rutland–Southern Vermont Regional Airport Cape Air
Answer: Barnstable Municipal Airport