Question: What country do USCGC Campbell and TWA Flight 800 have in common?

Context paragraphs:
Farmers Bank Building (Pittsburgh): The Farmers Bank Building was a 27-story, 105 m skyscraper in Pittsburgh, Pennsylvania completed in 1902 and demolished on May 25, 1997.  The University of Pittsburgh's online digital library states the building was constructed in 1903 and had 24 stories.  To a generation of Pittsburgh sports fans the building is well remembered for being resurfaced in the mid 1960 in a failed rehabilitation but also fondly for a 15 story high mural of Roberto Clemente, Bill Mazeroski, Jack Lambert, Mean Joe Greene and Mario Lemieux completed in 1992 by Judy Penzer, who was killed in the crash of TWA Flight 800 four years later.  For the five years the mural existed it was often the centerpiece for national networks cutting to or from games while they were in town for sporting events.

Andrea Stassou: Andrea Stassou is an American television journalist.  She has worked at both the local and network levels, covering major stories such as the 9/11 attacks, the crash of TWA Flight 800, the death of JFK Jr., and the Columbia space shuttle disaster.

Aircraft fuel tanks: Aircraft fuel tanks are a major component of aircraft fuel systems.  They can be classified into internal or external tanks and further classified by method of construction or intended use.  Safety aspects of aircraft fuel tanks were examined during the investigation of the 1996 TWA Flight 800 in-flight explosion accident.

James Kallstrom: James K. Kallstrom (born May 6, 1943) is a former FBI Assistant Director.  He led the investigation into the 1996 explosion of TWA Flight 800.  He was a supervising agent in the New York investigation of the Cosa Nostra criminal network that resulted in the Mafia Commission Trial of 1985–1986.  Kallstrom worked for 27 years at the FBI and has been described as an expert in wiretapping.  During his career at the FBI he was a leading advocate of expanding wiretapping power through the Communications Assistance for Law Enforcement Act (CALEA).  He is a former Marine captain and Vietnam veteran.  He left the public sector for private sector employment in the financial industry beginning in 1998.  After the 9/11 attacks, Kallstrom returned to the public sector to lead New York state's public safety office.

Kristina Borjesson: Kristina Borjesson is a freelance journalist.  She edited an award-winning collection of essays, "Into the Buzzsaw: Leading Journalists Expose the Myth of a Free Press" (2002), for which she wrote a chapter detailing her investigation of the TWA Flight 800 crash.  "Into the Buzzsaw" won the Arthur Rowse Award for Press Criticism and an Independent Publishers Award in the current events category.  The book was also a New York Public Library "Books to Remember"selection.  Borjesson's second book, "Feet to the Fire: The Media After 9/11, Top Journalists Speak Out" contains a series of interviews with distinguished American journalists and news executives discussing the problems of press coverage of the run-up to the Iraq War as well as the war itself.  "Feet to the Fire" also won the Independent Publishers Award in the current events category.  In July 2013, "TWA Flight 800," a feature-length investigative film Borjesson wrote, produced and directed, was released on the Epix premium cable channel.  In the film, former members of the original government investigation into the mid-air explosion of a 747 off the coast of Long Island, New York on July 17, 1996, come forward to discuss how the original investigation was undermined.  They also present forensic evidence showing what happened to the jetliner.  Previously, Borjesson won an Emmy for investigative reporting and a Murrow award for her work as Field Producer/Reporter for the CBS Reports documentary, "Legacy of Shame," updating CBS's signature documentary on migrant farmworkers, "Harvest of Shame" with Edward R. Murrow.  Borjesson also produced and co-wrote the CBS Reports biography of Cuba's Fidel Castro titled "The Last Revolutionary," which was Emmy-nominated.  For CNN's "NewsStand" show, she produced several lead pieces, including a two-part investigation of the business practices of Hollywood agents and managers.  In September 2013, Borjesson released on Amazon Kindle her first work of fiction, "The Reptile Club Librarian", a book based on the life of a man who spent most of his professional life working both sides of the law.

TWA Flight 800: Trans World Airlines Flight 800 (TWA 800) was a Boeing 747-100 that exploded and crashed into the Atlantic Ocean near East Moriches, New York, on July 17, 1996, at about 8:31 p.m. EDT, 12 minutes after takeoff from John F. Kennedy International Airport on a scheduled international passenger flight to Rome, with a stopover in Paris.  All 230 people on board perished in the third-deadliest aviation accident in U.S. territory.

TWA Flight 800 conspiracy theories: TWA Flight 800 conspiracy theories suggest that the crash of Trans World Airlines Flight 800 (TWA 800) was due to causes other than those determined by the National Transportation Safety Board (NTSB).  The NTSB found the probable cause of the crash of TWA Flight 800 was an explosion of flammable fuel/air vapors in a fuel tank, most likely from a short-circuit.  Conspiracy theories say the crash was due to a U.S. Navy missile test gone awry, a terrorist missile strike or an on-board bomb.  On June 19, 2013, a documentary alleging that the investigation into the crash was a cover-up made news headlines with statements from six members of the original investigation team, now retired, who also filed a petition to reopen the probe.

Jed Johnson (designer): Jed Johnson (December 30, 1948 – July 17, 1996) was an American interior designer and film director.  Initially hired by Andy Warhol to sweep floors at Warhol's Factory, he subsequently moved in with Warhol and for twelve years was his lover.  As a passenger in the first class cabin, he was killed when TWA Flight 800 exploded shortly after takeoff in 1996.

TWA Flight 800 (1964): "For the 1996 disaster of the same airline and flight number, see TWA Flight 800"

USCGC Campbell (WMEC-909): USCGC "Campbell" (WMEC-909) is a United States Coast Guard medium endurance cutter based at the Portsmouth Naval Shipyard in Kittery, Maine.  "Campbell" is the sixth Coast Guard Cutter to bear the name and is assigned to the Atlantic.  The ship bears the distinction of having made some of the largest narcotics seizures in Coast Guard history as well as being the command ship for the TWA 800 recovery effort.

Supporting paragraphs: USCGC Campbell (WMEC-909) TWA Flight 800
Answer: United States