Question: In which TV series did the actor who played Gant in the film Firefox first achieve success ?

Context articles: Clint Eastwood
Firefox Down
Burt Lancaster
Mitchell Gant
Mushroom TV
Robert Johnson
Avtaar
Firefox (novel)
Garnett Thompson
Heiau

Clinton Eastwood Jr. (born May 31, 1930) is an American actor, filmmaker, musician, and political figure.
 After achieving success in the Western TV series "Rawhide", he rose to international fame with his role as the Man with No Name in Sergio Leone's "Dollars" Trilogy of Spaghetti Westerns during the 1960s, and as antihero cop Harry Callahan in the five "Dirty Harry" films throughout the 1970s and 1980s.
 These roles, among others, have made Eastwood an enduring cultural icon of masculinity.
Firefox Down is a 1983 novel by author Craig Thomas.
 It is a sequel to his novel "Firefox".
 Craig Thomas dedicated the first edition of the novel to actor/director/producer Clint Eastwood, who starred as Mitchell Gant in the film adaptation of the first novel, stating, "For Clint Eastwood — pilot of the Firefox".
Burton Stephen "Burt" Lancaster (November 2, 1913 – October 20, 1994) was an American film actor.
 Initially known for playing "tough guys", Lancaster went on to achieve success with more complex and challenging roles.
 He was nominated four times for Academy Awards and won once for his work in "Elmer Gantry" in 1960.
 He also won a Golden Globe for that performance and BAFTA Awards for "The Birdman of Alcatraz" (1962) and "Atlantic City" (1980).
 During the 1950s his production company Hecht-Hill-Lancaster was highly successful, making films such as "Marty" (1955), "Trapeze" (1956), "Sweet Smell of Success" (1957), "Run Silent, Run Deep" (1958), and "Separate Tables" (1958).
Mitchell Gant is a fictional character in a series of books written by Craig Thomas.
 His first (and best known thanks to a successful film adaptation) appearance occurs in the 1977 novel "Firefox" as a US Air Force major that steals a Russian MiG-31 Firefox fighter aircraft prototype.
Mushroom TV Limited was an English television company and owner of several satellite television music channels.
 Mushroom operated Channel AKA, Starz TV and Greatest Hits TV.
 The company was launched in 2000 and, according to their website, were fully committed to supporting British acts and helping them to achieve success in the music industry.
Robert Leroy Johnson (May 8, 1911August 16, 1938) was an American blues singer-songwriter and musician.
 His landmark recordings in 1936 and 1937 display a combination of singing, guitar skills, and songwriting talent that has influenced later generations of musicians.
 Johnson's shadowy and poorly documented life and death at age 27 have given rise to much legend.
 One Faustian myth says that he sold his soul to the devil at a local crossroads of Mississippi highways to achieve success.
 As an itinerant performer who played mostly on street corners, in juke joints, and at Saturday night dances, Johnson had little commercial success or public recognition in his lifetime.
Avtaar is a 1983 film starring Rajesh Khanna and Shabana Azmi.
 It was directed by Mohan Kumar, and the music was by Laxmikant Pyarelal.
 Rajesh Khanna did achieve success from "Amardeep" and "Prem Bandhan" onwards, but this was Rajesh Khanna's biggest hit film in terms of box office collections after his bad phase from 1976 to 1978.
 Avtaar was a commercial hit, and was critically acclaimed.
 It also earned several Filmfare nominations.
 However Rajesh Khanna missed the Best Actor award to Naseeruddin Shah for Masoom.
 In 1986 Mohan Kumar made Amrit with Rajesh Khanna in the lead as an old man but with different story line.
 Rajesh Khanna bagged All-India Critics Association (AICA) Best Actor Award for his performance in this film for the year 1983.
Firefox is a thriller novel written by Craig Thomas and published in 1977.
 The Cold War plot involves an attempt by the CIA and MI6 to steal a highly advanced experimental Soviet fighter aircraft.
 The chief protagonist is fighter pilot turned spy Mitchell Gant.
 The book was subject to a 1982 film adaptation produced and directed by Clint Eastwood who also played the role of Gant in the film.
Garnett Thompson is an American professional basketball player.
 He is from Islip, New York and initially played college basketball at Suffolk Community College.
 The 6'9" Forward played college basketball with the Providence Friars.
 He only played at Providence University for 1 year.
 He has played internationally with AZS Koszalin of Poland.
 Thompson has played professionally in Lebanon as well.
 In Lebanon, he has helped the Ceders achieve success.
 He has played at Lebanon for 5 years.
 He has also found playing time in Street Basketball at the Entertainers Ball Classic at Rucker Park.
 He returned in 2016 to play with the Lebanese team Champville without being paid in the Henri Chalhoub Tournament, he helped his team reach the final but lost against Byblos.
A heiau ( ) is a Hawaiian temple.
 Many types of heiau were built, including heiau to treat the sick ("heiau hōʻ ola"), offer first fruits, offer first catch, start rain, stop rain, increase the population, ensure the health of the nation, achieve success in distant voyaging, reach peace, and achieve success in war ("luakini").