Question: What city and state was the 1973 film, which starred Gary Kurtz, set?

Context paragraphs:
A Secular Humanist Declaration: A Secular Humanist Declaration was an argument for and statement of support for democratic secular humanism.  The document was issued in 1980 by the Council for Democratic and Secular Humanism ("CODESH"), now the Council for Secular Humanism ("CSH").  Compiled by Paul Kurtz, it is largely a restatement of the content of the American Humanist Association's 1973 Humanist Manifesto II, of which he was co-author with Edwin H. Wilson.  Both Wilson and Kurtz had served as editors of "The Humanist", from which Kurtz departed in 1979 and thereafter set about establishing his own movement and his own periodical.  His Secular Humanist Declaration was the starting point for these enterprises.

Impostor (film): Impostor is a 2002 American science fiction film based upon the 1953 short story "Impostor" by Philip K. Dick.  The film starred Gary Sinise, Madeleine Stowe, Vincent D'Onofrio, and Mekhi Phifer and was directed by Gary Fleder.

Return to Paradise (1953 film): Return to Paradise is a Technicolor South Seas drama film released by United Artists in 1953.  The film was directed by Mark Robson and starred Gary Cooper, Barry Jones and Roberta Haynes.  It was based on a short story, "Mr. Morgan", by James Michener in his short story collection "Return to Paradise", his sequel to "Tales of the South Pacific".  It was filmed on location in Matautu, Western Samoa (present-day Samoa).

American Graffiti: American Graffiti is a 1973 American coming-of-age comedy-drama film directed and co-written by George Lucas starring Richard Dreyfuss, Ron Howard, Paul Le Mat, Harrison Ford, Charles Martin Smith, Cindy Williams, Candy Clark, Mackenzie Phillips, Bo Hopkins, and Wolfman Jack.  Suzanne Somers and Joe Spano also appear in the film.  Set in Modesto, California in 1962, the film is a study of the cruising and rock and roll cultures popular among the post–World War II baby boom generation.  The film is told in a series of vignettes, telling the story of a group of teenagers and their adventures over a single night.

The Empire Strikes Back: The Empire Strikes Back (also known as Star Wars: Episode V – The Empire Strikes Back) is a 1980 American epic space opera film directed by Irvin Kershner.  Leigh Brackett and Lawrence Kasdan wrote the screenplay, with George Lucas writing the film's story and serving as executive producer.  The second installment in the original "Star Wars" trilogy, it was produced by Gary Kurtz for Lucasfilm and stars Mark Hamill, Harrison Ford, Carrie Fisher, Billy Dee Williams, Anthony Daniels, David Prowse, Kenny Baker, Peter Mayhew, and Frank Oz.

A Farewell to Arms (1957 film): A Farewell to Arms is a 1957 American DeLuxe Color CinemaScope drama film directed by Charles Vidor.  The screenplay by Ben Hecht, based in part on a 1930 play by Laurence Stallings, was the second feature film adaptation of Ernest Hemingway's 1929 semi-autobiographical novel of the same name.  It was the last film produced by David O. Selznick.  An earlier film version, "A Farewell to Arms" starred Gary Cooper and Helen Hayes.

Gary Kurtz: Gary Douglas Kurtz (born July 27, 1940) is an American film producer whose list of credits includes "American Graffiti" (1973), "Star Wars" (1977), "The Empire Strikes Back" (1980), "The Dark Crystal" (1982) and "Return to Oz" (1985).  Kurtz also co-produced the 1989 science fiction adventure film "Slipstream", which reunited him with "Star Wars" star Mark Hamill.

USS PC-1168: USS "PC-1168" was a "PC-461"-class submarine chaser built for the United States Navy during World War II.  "PC-1168" is notable for being the ship on which the film "You're in the Navy Now", which starred Gary Cooper, was filmed in 1950.  The ship was later transferred to the Republic of China Navy, serving from 1954 to 1970 as ROCS "Ching Kiang" (PC-116).

Slipstream (1989 film): Slipstream is a 1989 science fiction film directed by Steven Lisberger, who had previously directed the cult classic 1982 science fiction film "Tron".  It was produced by Gary Kurtz, best known for his collaboration with George Lucas on the first two "Star Wars" films and "American Graffiti".  "Slipstream" reunited Kurtz with his "Star Wars" lead Mark Hamill, who features alongside Bill Paxton, Bob Peck and Kitty Aldridge, with cameo appearances from Robbie Coltrane, Ben Kingsley and F. Murray Abraham.

5-25-77: 5-25-77 is a coming of age film written and directed by Patrick Read Johnson and produced by Fred Roos and Gary Kurtz.  It stars John Francis Daley as a teenage filmmaker living in Wadsworth, Illinois, and his excitement for the premiere of "Star Wars" on May 25, 1977.  Johnson began funding the project in 2001 and filming took place from 2004-2006.  Additional shots were filmed in 2015 and 2016, making the filming course span a total of thirteen years.

Supporting paragraphs: Gary Kurtz American Graffiti
Answer: Modesto, California