Question: Which United States Airforce installation has a large cantilever hangar and is located in northeastern Maine?
Context: Campbell Army Airfield (IATA: HOP, ICAO: KHOP, FAA LID: HOP) is a military airport at Fort Campbell, which is located near Hopkinsville, a city in Christian County, Kentucky, United States.  Previously Campbell Air Force Base, a U.S. Air Force installation from 1947 to 1959, this U.S. Army airfield has two asphalt paved runways: 5/23 is 11,826 by 200 feet (3,605 x 61 m) and 18/36 is 4,500 by 150 feet (1,372 x 46 m).  The airfield currently houses UH-60, CH-47, AH-64, and OH-58 helicopters of the 101st Combat Aviation Brigade and MH-60, MH-47, and MH-6 helicopters of the 160th SOAR.  It is also home to elements of the 159th Combat Aviation Brigade.  Before 2004, all the 101st Airborne Division's Chinooks were in 7th Battalion, 101st Aviation Regiment, and the specialized hangar for those aircraft was built on CAAF.  With the division of those aircraft between the two brigades, a Chinook hangar does not yet exist on the 159th's new home on Saber Army Heliport at the opposite end of post. Air 500 Limited was a Canadian airline.  Founded in 1985 by Dennis Chadala, former Captain, director of marketing and assistant to Carl Millard, of the defunct Millardair.  The company commenced operations with 1 Super Beech 18 Model E, registered C-FTAE that was purchased from Bradley First Air where it had retired from flying the dew line in Northern Canada.  The Beech18 was originally purchased new by Timmins Aviation.  The founder had extensive knowledge of the emergency freight business and the operation of DC3s, Super DCs and DC4 aircraft due to his position within the inner circle at Millardair.  Dennis Chadala created Air 500 Limited on a shoe string, without financing and was the first airline to receive licensing and an operating certificate at Toronto's Pearson International Airport following deregulation of the aviation industry in Canada in 1985.  The airline grew rapidly adding an aircraft at the pace of 1 every six months.  By 1989 it had acquired almost all of the business flying ad hock charter out of Toronto for Chrysler, Ford, GM and many others formerly serviced by his former place of employment at Millardair.  The young owner's extensive knowledge of this niche area of aviation enabled him to expand rapidly and capture that market segment.  At the time, Air 500 was an exceptional success story operating 3 Super Beech 18 aircraft, 2 Cessna 310s, 1 DC3, 1 Super DC(C117), 1 Piper Cheyenne and 1 Mitsubishi MU2 Marquise.  In the early nineties, the fleet continued to grow adding 2 more Mitsubishi MU2 aircraft, 2 Citation 500 business jets and 1 Citation 2 business jet.  In 1995 the airport was privatized and came under the direction and control of the GTAA (Greater Toronto Airport Authority) and Dennis Chadala simultaneously acquired Hangar #7, the newest hangar facility at the north end of the Pearson Airport off Derry Road with 40 years remaining on the current land lease.  Air 500 had contracts in the courier industry, Air Ambulance Services and Aircraft Management as well as a base of operations at the Esso Avitat in Ottawa where 2 Mitsubishi Marquise MU2 aircraft were stationed.  One was flying an exclusive long term contract for Nordion (formerly Atomic Energy of Canada) flying radio active isotopes to numerous destinations in the United States for medical purposes as a well a designated charter aircraft.  Hangar #7 was large enough to lease out one half the facility to Air 500 Limited and the other half to Execaire/Innotech Aviation and they remained tenants of the hangar owned by Dennis Chadala until November 1998, at which time Execaire/Innotech owned by the IMP Group out of Halifax Nova Scotia struct a deal with Dennis Chadala to purchase his hangar facility, all his aircraft and the operating airline Air 500 Limited.  Dennis Chadala stayed on with the company during a short transition period that ended in February 1999.  Air 500 was amalgamated into Execaire and became part of that operating group taking advantage of the synergies available to them. A Double cantilever hangar is a type of hangar that was constructed by the United States Air Force during the Cold War.  Large hangers were constructed at Castle Air Force Base, Loring Air Force Base, Carswell Air Force Base, and Travis Air Force Base, while smaller hangars were constructed at March Air Force Base, Edwards Air Force Base, Hanscom Air Force Base, and Homestead Air Force Base. Fort Bragg, North Carolina, is a military installation of the United States Army and is the largest military installation in the world (by population) with more than 50,000 active duty personnel.  The installation is located within Cumberland, Hoke, Harnett and Moore counties.  The installation borders the towns of Fayetteville, Spring Lake and Southern Pines.  It was also a census-designated place in the 2010 Census, during which a population of 39,457 was identified.  It is named for Confederate General Braxton Bragg.  It covers over 251 sqmi .  It is the home of the Army's XVIII Airborne Corps and is the headquarters of the United States Army Special Operations Command, which oversees the U.S. Army 1st Special Forces Command (Airborne) (Provisional) and 75th Ranger Regiment.  It is also home to the U.S. Army Forces Command, U.S. Army Reserve Command, and Womack Army Medical Center.  Fort Bragg maintains two airfields: Pope Field, where the United States Air Force stations global airlift and special operations assets as well as the Air Force Combat Control School, and Simmons Army Airfield, where Army aviation units support the needs of airborne and special operations forces on post. The Loring Air Force Base Arch Hangar is an arch hangar located at Loring International Airport in Limestone, Maine.  It was constructed by the United States Air Force as part of Loring Air Force Base.  It was constructed at the same time as the base's double cantilever hangar, and was one of the largest monolithic arch structures in the world at the time of its completion. Hitchcock Naval Air Station was a Naval Air Station built by the United States Navy during World War II to accommodate lighter-than-air aircraft, more commonly known as blimps.  It was located in the small town of Hitchcock, Texas, about 15 mi northwest of Galveston.  Construction began in 1942 and the base was commissioned on May 22, 1943.  The most prominent feature of the base was the 1000 ft long, 200 ft tall largely wooden blimp hangar.  The blimp hangar, which held six aircraft was built at a cost of $10 million.  The purpose of the base and its aircraft was to search for Axis power submarines in the Gulf of Mexico.  Beside the hangar there were auxiliary buildings including barracks, warehouses, a mess hall, gymnasium, auditorium and an Olympic-size swimming pool which was used to teach swimming and water-rescue. Loring Air Force Base (IATA: LIZ, ICAO: KLIZ) was a United States Air Force installation in northeastern Maine, near Limestone and Caribou in Aroostook County.  It was one of the largest bases of the U.S. Air Force's Strategic Air Command during its existence, and was transferred to the newly created Air Combat Command in 1992. The Niagara Cantilever Bridge or Michigan Central Railway Cantilever Bridge was a cantilever bridge across the Niagara Gorge.  An international railway-only bridge between Canada and the United States, it connected Niagara Falls, New York, and Niagara Falls, Ontario, located just south of the Whirlpool Bridge, and opened to traffic in 1883, it was replaced by the Michigan Central Railway Steel Arch Bridge in 1925. Eagle Lake is a town in Aroostook County, Maine, United States.  The population was 864 at the 2010 census.  The town was named by a body of troops heading from Bangor to the Aroostook War for the many eagles that they saw around the lake.  49.0% of the population speaks French, reflecting a trend in Northeastern Maine. Hangar No. 1 is an airship hangar located at Naval Air Engineering Station Lakehurst in Manchester Township, in Ocean County, New Jersey, United States.  It is best known as the intended destination of the rigid airship LZ 129 "Hindenburg" prior to the "Hindenburg" disaster on May 6, 1937, when it crashed and burned while landing.
Answer: Loring Air Force Base