Question: The airline featured in "Bombing Hitler's Dams" is based in which country? 
Context: Barossa Reservoir is a reservoir in the Australian state of South Australia, built between 1899 and 1902 to supply water to Gawler and other northern country areas.  Built at a cost of almost £170,000 the reservoir was hailed on completion as an engineering marvel, and at a total of 36 metres, was the highest in Australia.  The thin arch of the dam retaining wall, curved against the pressure of the water, was an innovation considered radical, and attracted the Reservoir international attention.  It was featured in the "Scientific American" and caused the "American Engineers News" to remark that its "boldness of design deserves to rank with the most famous dams in the world".  Nowadays, the dam is notable for its parabola effect, where a voice can be heard clearly from one side to the other — over 140 metres, end to end.  This unusual acoustic phenomenon is a popular tourist attraction, and has earned the dam the title "Whispering Wall" (see Whispering gallery). Sun Country Airlines is an United States based airline headquartered in the Minneapolis–Saint Paul suburb of Eagan, Minnesota and based at nearby Minneapolis–Saint Paul International Airport.  The airline's main focus is flying Minnesotans to warmer destinations during the winter months, such as Florida and Mexico.  In the summer months, the airline flies passengers between the Twin Cities and the east and west coast in the U.S. Sun Country also operates flights from Dallas/Fort Worth which serves as a focus city for the airline.  It operates scheduled and charter flights to destinations in the United States, Mexico, Costa Rica and the Caribbean (including Cuba from 2015) as well as ad-hoc charters. PT Lion Mentari Airlines, operating as Lion Air, is an Indonesian low-cost airline.  Based in Jakarta, Indonesia, Lion Air is the country's largest privately run airline, the second largest low-cost airline in Southeast Asia after AirAsia and the second largest airline of Indonesia, flying to more than 79 destinations in Indonesia, Singapore, Malaysia and Saudi Arabia, as well as charter routes to China, Hong Kong and Macau. Buffalo Airways is a family-run airline based in Hay River, Northwest Territories, Canada, established in 1970.  Buffalo Airways was launched by Bob Gauchie and later sold to one of his pilots, Joe McBryan (aka "Buffalo Joe").  It operates scheduled passenger, charter passenger, charter cargo, firefighting and fuel services.  Its main base is at Yellowknife Airport (CYZF).  It has two other bases at Hay River/Merlyn Carter Airport (CYHY) and Red Deer Regional Airport (CYQF).  The Red Deer base is the main storage and maintenance facility.  The airline is also the subject of the History television reality series "Ice Pilots NWT". Southern Star Airlines was a domestic airline based in Juba, the capital and largest city of South Sudan.  Southern Star Airlines was founded early since the independence of the country in July 2011.  The airline owned only one aircraft, which was one de Havilland Canada DHC-8-100, registration .  Southern Star Airlines' inaugural flight took place on 20 August 2011.  However, after only two months of ""erratic operations"", the airline closed, shut down all operations, and gave away its one and only aircraft to the Kenyan-based airline ALS. Hydroproject (Russian: Институт «Гидропроект» , Gidroproekt) is a Russian hydrotechnical design firm.  Based in Moscow, it has a number of branches around the country.  Its main activities are design of dams, hydroelectric stations, canals, sluices, etc. Bombing Hitler's Dams is an episode on "NOVA" in which Hugh Hunt enlists the help of Buffalo Airways and others in an attempt to recreate the bouncing bomb used in World War II's Operation Chastise. Maluti Sky was an airline based at Moshoeshoe I International Airport in Maseru, the capital of Lesotho.  It offered scheduled and charter flights.  The airline was founded in 2009 as MGC Airlines, becoming the first privately owned airline in Lesotho.  Maluti Sky began passenger flights to Johannesburg in March 2016; it was at that time the only airline based in the country since Lesotho Airways ceased operations in 1996.  However, the airline terminated all flights in 2017 as a result of financial issues. Air Costa was an Indian regional airline headquartered in Vijayawada and based out of Chennai Airport.  It was owned by Indian business company LEPL Group.  The airline commenced operations as a regional airline in October 2013 using two Embraer E-170 aircraft with the first flight taking off from Chennai on 16 October 2013.  The airline got a permit for pan India operations in October 2016.  The airline focused on connectivity between tier II and tier III cities in the country and invested as of 2015.  Air Costa operated 32 daily flights to nine destinations from its focus cities Chennai and Vijayawada as of 2015.  The airline had a maintenance center in Chennai.  On 28 February 2017, it suspended operations until further notice. Sriwijaya Air is an Indonesian airline based in Jakarta with its headquarters located at Soekarno-Hatta International Airport M1 Area in Tangerang, near Jakarta.  Sriwijaya Air is the country's third largest carrier, operating a fleet of narrow-body aircraft and offers flights to various Indonesian destinations and a few international destinations.  The airline is listed as a Category 1 airline by Indonesia's Civil Aviation Authority, the highest status that can be achieved for operational safety; by contrast, Airline Ratings's 2015 report saw the airline awarded just one out of seven stars for safety.
Answer: Canada