Question: In which realm was this pilot's plane shot down whose flight had been approved by Thomas S. Gates Jr.?

full_context: Document 1: Viktor Belenko: Viktor Ivanovich Belenko (Russian: Виктор Иванович Беленко , born 15 February 1947) is a former Soviet pilot who defected to the West while flying his MiG-25 'Foxbat' jet fighter and landed in Hakodate, Japan. The opportunity to examine the plane up close was an intelligence bonanza for the West. Belenko later became an American aerospace engineer.
Document 2: Kenneth Arnold: Kenneth A. Arnold (March 29, 1915 – January 16, 1984) was an American aviator and businessman. He is best known for making what is generally considered the first widely reported unidentified flying object sighting in the United States, after claiming to have seen nine unusual objects flying in tandem near Mount Rainier, Washington on June 24, 1947.
Document 3: John Foster Dulles: John Foster Dulles ( ; February 25, 1888May 24, 1959) served as United States Secretary of State under Republican President Dwight D. Eisenhower from 1953 to 1959. He was a significant figure in the early Cold War era, advocating an aggressive stance against Communism throughout the world.
Document 4: Korean Air Lines Flight 902: On 20 April 1978, Soviet air defense shot down Korean Air Lines Flight 902 (KAL 902) near Murmansk, Soviet Union, after the civilian aircraft violated Soviet airspace and failed to respond to Soviet ground control and interceptors. Soviet Air Defence Forces initially identified it as part of the US air reconnaissance force, which carried out thousands of flights along Soviet borders annually at the time. Captain Alexander Bosov, pilot of the Sukhoi Su-15 that brought down Flight 902, saw Asian logogram characters on the tail of the Korean aircraft, and reported this to the ground control. Despite this, Vladimir Tsarkov, commander of the 21st Soviet Air Defence Corps, ordered Bosov to take down the plane, as the plane failed to respond to repeated orders to land, and was approaching the Soviet border with Finland. The Su-15 opened fire, forcing the plane to descend, and killing two of the 109 passengers and crew members aboard Flight 902. The plane made an emergency landing on the frozen Korpiyarvi lake (not to be confused with the Korpijärvi lake) near the Finnish border.
Document 5: Bridge of Spies (film): Bridge of Spies is a 2015 historical drama legal thriller film directed and co-produced by Steven Spielberg, written by Matt Charman, Ethan and Joel Coen and stars Tom Hanks, Mark Rylance, Amy Ryan, and Alan Alda. Set during the Cold War, the film tells the story of lawyer James B. Donovan, who is entrusted with negotiating the release of Francis Gary Powers—a U.S. Air Force pilot whose U-2 spy plane was shot down over the Soviet Union in 1960—in exchange for Rudolf Abel, a convicted Soviet KGB spy held under the custody of the United States, whom he represented at trial. The name of the film refers to the Glienicke Bridge, which connects Potsdam with Berlin, where the prisoner exchange took place. The film was an international co-production of the United States and Germany.
Document 6: 1969 EC-121 shootdown incident: The 1969 EC-121 shootdown incident occurred on April 15, 1969 when a United States Navy Lockheed EC-121M Warning Star of Fleet Air Reconnaissance Squadron One (VQ-1) on a reconnaissance mission was shot down by North Korean MiG-21 aircraft over the Sea of Japan. The plane crashed 90 nmi off the North Korean coast and all 31 Americans (30 sailors and 1 Marine) on board were killed, which constitutes the largest single loss of U.S. aircrew during the Cold War era.
Document 7: Thomas O'Toole: Thomas O'Toole was a science reporter and editor at "The Washington Post" from 1966 to 1987. His main subject was the space program, in particular the Apollo program to land men on the moon. He extensively covered Skylab, the Apollo-Soyuz Test Project, the Voyager program to Jupiter, Saturn and Uranus, and the space shuttle program. O'Toole wrote many articles on energy, including the burgeoning nuclear power industry in America. He also covered significant espionage stories, from Cold War subjects to Watergate and the hunt for Nazi figures hiding in America and elsewhere after World War 2.
Document 8: Thomas E. Cooper: Thomas Edward Cooper (b. 1943) is a United States scientist and businessman who served as Assistant Secretary of the Air Force (Acquisition) from 1983 to 1987.
Document 9: Charles Gates Jr.: Charles Cassius Gates Jr. (May 27, 1921 – August 28, 2005) was a businessman and philanthropist. His father, Charles Gates Sr., bought Colorado Tire & Leather for $3,500 in 1911. The company was renamed The Gates Rubber Company in 1919. It became world's largest non-tire rubber manufacturer. Charles Gates Jr. took over in 1961, upon the death of his father. The Gates Corporation continued to grow, diversify, and acquire other companies, including Learjet. By 1996, the privately held Gates Corporation employed over 14,000 people. It was sold to London-based Tomkins plc that year for US$1.1 billion.
Document 10: Thomas S. Gates Jr.: Thomas Sovereign Gates Jr. (April 10, 1906March 25, 1983) was United States Secretary of Defense from 1959 to 1961 under President Eisenhower. He was promoted from deputy secretary of defense. During his tenure, he established a task force to set nuclear target priorities. He also authorized U-2 reconnaissance flights, including the flight of Francis Gary Powers.
Document 11: George G. Finch: Maj. Gen. George G. Finch became the Senior Leader of the US Air National Guard; (Chief of the Air Division National Guard Bureau) (1948-1950) In June 1953 it was reported that Gen. Mark W. Clark would retire and be replaced by Maj. Gen George G. Finch on the UN command delegation to the Korean armistice talks George G. Finch, born April 11, 1902 in Dade City, Florida, is considered one of the pioneers in United States aviation history. He began his military career during World War 1, enlisting in the Aviation Section of the Army's Signal Corps in 1918. He remained in the Reserve Corps after the war, and in 1926, became Commander, 27th Pursuit Squadron, 1st Pursuit Group. In 1940, Georgia Governor Ed Rivers commissioned him to form the first flying unit of the Georgia Air National Guard. The unit was mobilized into the U.S. Army in September, 1941, with Major Finch as commander. After World War II, he was a leading critic of efforts to eliminate the air arm of the National Guard during peacetime. General Finch gained the respect and admiration of Air National Guardsmen throughout the nation with his steadfast support and successful efforts to preserve the Air Guard. He became the first Chief of the Air Force Division of the National Guard Bureau in 1948. Under his leadership, the Air National Guard built to combat readiness and was among the first components called into service after the outbreak of the Korean War. As a result of General Finch's vision and perseverance, 45,000 highly trained officers and airmen of 22 wings and 65 squadrons gave the Air Force the strength it needed in the early, critical phases of the Communist drive down the Korean peninsula.General Finch served as the senior Air Force member of the United Nations negotiating team at the peace talks at Panmunjom, Korea, and received the Legion of Merit for outstanding service in 1955; General Finch assumed command of Fourteenth Air Force, Robins AFB, Georgia, becoming the nation's first Air National Guardsman to head a numbered air force. General Finch had a career of "firsts" including the US Army's first night landing with a single, five-million-candlepower floodlight in 1927. He also established and endowed the General John P. McConnell Award at the United States Air Force Academy. Considered by many as the father of the strong, independent Air National Guard existing today, General Finch retired in 1957. No man has had greater impact on the Air Force Reserve and National Guard than has General George G. Finch.A graduate of the University of Georgia and a member of the Georgia Bar, General Finch was enshrined in the Georgia Aviation Hall of Fame May 18, 1996.
Document 12: Francis Gary Powers: Francis Gary Powers (August 17, 1929 – August 1, 1977) – often referred to as simply Gary Powers – was an American pilot whose Central Intelligence Agency (CIA) U-2 spy plane was shot down while flying a reconnaissance mission in Soviet Union airspace, causing the 1960 U-2 incident.
Document 13: Robert McNamara: Robert Strange McNamara (June 9, 1916 – July 6, 2009) was an American business executive and the eighth Secretary of Defense, serving from 1961 to 1968 under Presidents John F. Kennedy and Lyndon B. Johnson. He played a major role in escalating the United States involvement in the Vietnam War. McNamara was responsible for the institution of systems analysis in public policy, which developed into the discipline known today as policy analysis.
Document 14: MiG Pilot: The Final Escape of Lieutenant Belenko: MiG Pilot: The Final Escape of Lieutenant Belenko is a 1980 biography by John Barron about the life and 1976 defection of Soviet Mikoyan-Gurevich MiG-25 fighter pilot Viktor Belenko to the United States.
Document 15: Chuck Yeager: Charles Elwood "Chuck" Yeager ( ; born February 13 , 1923) is a former United States Air Force general officer and record-setting test pilot. In 1947, he became the first pilot confirmed to have exceeded the speed of sound in level flight.
ground_truth: Soviet Union airspace