Question: The 1984 Troy State Trojans football team represented Troy State University during the 1984 NCAA Division II football season, the 1984 team was led by which former American football coach?

full_context: Document 1: 1987 NCAA Division II football season: The 1987 NCAA Division II football season, part of college football in the United States organized by the National Collegiate Athletic Association at the Division II level, began in August 1987, and concluded with the NCAA Division II Football Championship on December 12, 1987, at Braly Municipal Stadium in Florence, Alabama, hosted by the University of North Alabama. The Troy State Trojans defeated the Portland State Vikings, 31–17, to win their second Division II national title.
Document 2: Tom Coughlin: Thomas Richard "Tom" Coughlin ( ; born August 31, 1946) is the executive vice president of football operations for the Jacksonville Jaguars of the National Football League (NFL). He was the head coach for the New York Giants for 12 seasons. He led the Giants to victory in Super Bowl XLII and Super Bowl XLVI, both against the New England Patriots. Coughlin was also the inaugural head coach of the Jaguars, serving from 1995 to 2002 and leading the team to two AFC Championship Games. Prior to his head coaching career in the NFL, he was head coach of the Boston College Eagles football team from 1991 to 1993, and served in a variety of coaching positions in the NFL as well as coaching and administrative positions in college football.
Document 3: Barry Switzer: Barry Layne Switzer (born October 5, 1937) is a former American football player and coach. He served for 16 years as head football coach at the University of Oklahoma and four years as head coach for the Dallas Cowboys of the National Football League (NFL). He helped the Cowboys win Super Bowl XXX against the Pittsburgh Steelers. He has one of the highest winning percentages of any college football coach in history, and is one of only three head coaches to win both a college football national championship and a Super Bowl, the others being Jimmy Johnson and Pete Carroll.
Document 4: Chan Gailey: Thomas Chandler Gailey Jr. (born January 5, 1952) is a former American football coach. Gailey has served as the head coach of the Dallas Cowboys, Georgia Tech Yellow Jackets, and Buffalo Bills.
Document 5: 1984 Troy State Trojans football team: The 1984 Troy State Trojans football team represented Troy State University during the 1984 NCAA Division II football season, and completed the 64th season of Trojan football. The Trojans played their home games in at Veterans Memorial Stadium in Troy, Alabama. The 1984 team came off an 7–4 record from the previous season. The 1984 team was led by coach Chan Gailey. The team finished the regular season with a 9–1 record and made the NCAA Division II playoffs. The Trojans defeated the North Dakota State Bison 18–17 in the National Championship Game en route to the program's first NCAA Division II Football Championship and second overall national championship.
Document 6: 1987 Troy State Trojans football team: The 1987 Troy State Trojans football team represented Troy State University during the 1987 NCAA Division II football season, and completed the 67th season of Trojan football. The Trojans played their home games in at Veterans Memorial Stadium in Troy, Alabama. The 1987 team came off an 10–3 record from the previous season. The 1987 team was led by coach Rick Rhoades. The team finished the regular season with a 9–1–1 record and made the NCAA Division II playoffs. The Trojans defeated the Portland State Vikings 31–17 in the National Championship Game en route to the program's second NCAA Division II Football Championship and third overall national championship.
Document 7: 1984 Alabama Crimson Tide football team: The 1984 Alabama Crimson Tide football team (variously "Alabama", "UA", "Bama" or "The Tide") represented the University of Alabama in the 1984 NCAA Division I-A football season. It was the Crimson Tide's 92nd overall and 51st season as a member of the Southeastern Conference (SEC). The team was led by head coach Ray Perkins, in his second year, and played their home games at both Bryant–Denny Stadium in Tuscaloosa and Legion Field in Birmingham, Alabama. They finished the season with a record of five wins and six losses (5–6 overall, 2–4 in the SEC). This marked Alabama's first losing season since the Tide went 2–7–1 in 1957 under Jennings B. Whitworth, and ended Alabama's streak of 25 consecutive bowl appearances.
Document 8: 2004 Troy Trojans football team: The 2004 Troy Trojans football team represented Troy University in the 2004 NCAA Division I FBS football season. The Trojans played their home games at Movie Gallery Stadium in Troy, Alabama and competed in the Sun Belt Conference. The 2004 season was Troy's first season as a member of the Sun Belt Conference. Troy also made their first ever appearance in a Division 1-A bowl game during this season since the program transitioned to 1-A just three years prior in 2001. The Trojans lost 21-34 to Northern Illinois in the Silicon Valley Bowl.
Document 9: 1991 Pittsburg State Gorillas football team: The 1991 Pittsburg State Gorillas football team represented Pittsburg State University during the 1991 NCAA Division II football season, and completed the 84th season of Gorillas football and their third as members of NCAA Division II. The Gorillas played their home games in at Carnie Smith Stadium in Pittsburg, Kansas. The 1991 team came off a 12–1 record from the previous season. The 1991 team was led by coach Chuck Broyles. The team finished the regular season with a 9–1–1 record and made the NCAA Division II playoffs. The Gorillas defeated the Jacksonville State Gamecocks 23–6 in the National Championship Game en route to the program's third national championship.
Document 10: Bill Parcells: Duane Charles "Bill" Parcells (born August 22, 1941), also known as The Big Tuna, is a former American football coach, best known as a head coach in the National Football League (NFL) for 19 seasons. He rose to prominence as the head coach of the New York Giants, whom he led to two Super Bowl titles. Parcells later served as the head coach of the New England Patriots, New York Jets, and Dallas Cowboys. Throughout his career, he coached teams that were in a period of decline and turned them into postseason contenders. He is the only coach in NFL history to lead four different teams to the playoffs and three different teams to a conference championship game.
Document 11: 2006 Buffalo Bills season: The 2006 Buffalo Bills season was the franchise’s 47th season as a football team, 37th in the National Football League and first under both general manager Marv Levy and head coach Dick Jauron. Levy, who previously coached the team from 1986-1997, leading them to four straight AFC Championships and four straight Super Bowl appearances from 1990-1993, replaced Tom Donahoe, who was fired shortly after the end of the 2005 season, with hopes that his 11 full seasons as Bills head coach would improve a franchise that failed to make the playoffs during Donahoe’s tenure. Jauron, who previously coached the Chicago Bears from 1999-2003, replaced Mike Mularkey, who resigned shortly after Donahoe’s firing, citing family reasons and disagreement over the direction of the organization. The Bills hoped to improve on their 5-11 record from 2005, while also hoping to make the playoffs for the first time since 1999, but a 30-29 loss to the Tennessee Titans eliminated the team from playoff contention, extending their playoff drought to seven straight seasons, tying a record set from 1967-1973. For the second consecutive season, the Bills’ opening day starting quarterback was J. P. Losman.
Document 12: 2016 Troy Trojans football team: The 2016 Troy Trojans football team represented Troy University in the 2016 NCAA Division I FBS football season. They were led by second-year head coach Neal Brown and played their home games at Veterans Memorial Stadium in Troy, Alabama. The Trojans were members of the Sun Belt Conference. They finished the season 10–3, 6–2 in Sun Belt play to finish in a two-way tie for third place. They were invited to the Dollar General Bowl where they defeated Ohio. This was the first 10-win season ever for Troy since joining the FBS in 2001. It was also the first season that Troy had received a Top 25 ranking since joining the FBS in 2001.
Document 13: Tashard Choice: Tashard J. Choice (born November 20, 1984) is a former American football running back in the National Football League for the Dallas Cowboys, Washington Redskins, Buffalo Bills and the Indianapolis Colts. He played college football at Georgia Tech. Choice is currently a coach for the Dallas Cowboys.
Document 14: Jason Garrett: Jason Calvin Garrett (born March 28, 1966) is an American football head coach of the Dallas Cowboys of the National Football League (NFL). Garrett was the offensive coordinator and assistant head coach of the Cowboys before being promoted to interim head coach after the firing of Wade Phillips on November 8, 2010. He is a former professional American football quarterback in the National Football League for the Dallas Cowboys, New York Giants, Tampa Bay Buccaneers and Miami Dolphins. He played college football at Princeton University.
Document 15: Jim Chaney: James Allen Chaney (born January 12, 1962) is an American college football coach and former player. Chaney currently serves as the offensive coordinator for the University of Georgia. Chaney previously served in the same capacity at the University of Arkansas from 2012 to 2014 and University of Tennessee from 2009 to 2012, assuming the role of interim head coach for the final game of the 2012 season after Derek Dooley was fired.
ground_truth: Chan Gailey