Question: Who owns the airport  which was the destination of American Airlines Flight 514? 

Context paragraphs:
Hamburg cell: The Hamburg cell (German: "Hamburger Zelle" ) or Hamburg terror cell (German: "Hamburger Terrorzelle" ) was, according to U.S. and German intelligence agencies, a group of radical Islamists based in Hamburg, Germany that included students who eventually came to be key operatives in the 9/11 attacks.  Important members included Mohamed Atta, who led the four hijacking teams in 2001 and piloted American Airlines Flight 11; Ramzi bin al-Shibh, who conspired with the other three members but was unable to enter the United States; and Marwan al-Shehhi, who piloted United Airlines Flight 175, Ziad Jarrah, who piloted United Airlines Flight 93 and failed to hit a target in Washington D.C., claimed by Khalid Sheikh Mohammed to have been the Capitol.  Less important members included Said Bahaji, Zakariya Essabar, Mounir el-Motassadeq, and Abdelghani Mzoudi.

Alrosa Mirny Air Enterprise Flight 514: Alrosa Mirny Air Enterprise Flight 514 was a domestic scheduled passenger flight from Udachny, Russia, to Moscow.  On 7 September 2010, the Tupolev Tu-154M RA-85684 aircraft suffered a complete electrical failure "en route", leading to a loss of navigational systems.  The electrically operated fuel transfer pumps were also affected, meaning that the aircraft was unable to reach its intended destination.  An emergency landing was carried out at the closed Izhma Airport.  The aircraft overran the disused runway on landing and was damaged.  All nine crew and 72 passengers escaped unharmed.  The crew of Flight 514 were decorated for their actions in the accident.

Capital Airlines Flight 75: Capital Airlines Flight 75 was a domestic scheduled Capital Airlines flight operating between La Guardia Airport and Atlanta Airport.  A Vickers Viscount flying the route crashed in Chase, Maryland, on May 12, 1959, with the loss of all on board.  The crash was the second of three involving a Capital Airlines Vickers Viscount in as many years; the other two were Capital Airlines Flight 20 and Capital Airlines Flight 67.

American Airlines Flight 723: American Airlines Flight 723 was a scheduled American Airlines flight from Boston Airport in Massachusetts, to Chicago Midway Airport in Illinois.  On September 16, 1953, a Convair 240 propliner flying this route crashed while attempting to land at Albany Airport in upstate New York.

American Airlines Flight 514: American Airlines Flight 514 was a training flight from Idlewild International Airport, to Calverton Executive Airpark.  On the afternoon of August 15, 1959, the Boeing 707 operating the flight crashed near the Calverton airport, killing all five crew members aboard.  This was the first accident to ever involve a Boeing 707, which had only gone into service the previous year.

American Airlines Flight 587: American Airlines Flight 587 was a regularly scheduled passenger flight from John F. Kennedy International Airport in New York City to Las Américas International Airport in Santo Domingo in the Dominican Republic.  On November 12, 2001, the Airbus A300-600 flying the route crashed shortly after takeoff into the Belle Harbor neighborhood of Queens, a borough of New York City.  All 260 people aboard the plane (251 passengers and nine crew members) died, including one dog carried in the cargo hold; five bystanders and one other dog on the ground were killed as well.  It is the second-deadliest aviation incident in New York State, the second-deadliest aviation incident involving an Airbus A300 (after Iran Air Flight 655), and the second-deadliest aviation accident to occur on U.S. soil (after American Airlines Flight 191).  No commercial airplane crash since then that was ruled accidental and not criminal has even surpassed that death toll, even though there had been deadlier incidents of this type before 2001.

Calverton Executive Airpark: Calverton Executive Airpark (ICAO: 3C8, formerly CTO) is a public-owned private-use airport located three miles (5 km) west of the central business district of the Calverton hamlet, in the Town of Riverhead, Suffolk County, New York, United States.  It is owned by the Town of Riverhead.

Northwest Airlines Flight 253: Northwest Airlines Flight 253 was an international passenger flight from Amsterdam Airport Schiphol in Haarlemmermeer, Netherlands, to Detroit Metropolitan Wayne County Airport in Romulus, Michigan, United States.  The flight was the target of a failed al-Qaeda bombing attempt on Christmas Day, December 25, 2009, in which a passenger tried to set off plastic explosives sewn to his underwear.  There were 290 people on board the aircraft—an Airbus A330-323E operated by Northwest Airlines, which had merged with Delta Air Lines the year before.  Had the attempt succeeded, it would have surpassed American Airlines Flight 191 as the deadliest aviation occurrence on U.S. soil and tied Iran Air Flight 655 as the eighth-deadliest of all time.  The incident was also the second in 2009 involving an Airbus A330, after the crash of Air France Flight 447 on June 1.  This was also the final accident/incident involving Northwest Airlines as it closed down a month later when it merged with Delta Air Lines.

Capital Airlines Flight 67: Capital Airlines Flight 67 was domestic scheduled passenger flight operated by Capital Airlines that crashed on final approach to Freeland, Michigan, USA, during a severe snowstorm on April 6, 1958.  The flight was en route from Flint-Bishop Airport to the Freeland-Tri City Airport (now MBS International Airport) when it crashed.  Flight 67 was the first of four fatal crashes in the space of two years involving Capital Airlines Vickers Viscounts; the others were Capital Airlines Flight 300 (May 1958), Capital Airlines Flight 75 (May 1959) and Capital Airlines Flight 20 (January 1960).

TWA Flight 514: Trans World Airlines Flight 514, registration N54328, was a Boeing 727-231 en route from Indianapolis, Indiana, and Columbus, Ohio, to Washington Dulles International that crashed into Mount Weather, Virginia, on Sunday, December 1, 1974.  All 92 aboard, 85 passengers and seven crew members, were killed.  In stormy conditions late in the morning, the aircraft was in controlled flight and impacted a low mountain about 30 mi northwest of its revised destination.

Supporting paragraphs: American Airlines Flight 514 Calverton Executive Airpark
Answer: Town of Riverhead