Question: The 2008 Denver Broncos Season was the 25th under the ownership of a man who stepped down in 2014 due to what disease?

full_context: Document 1: 1981 Denver Broncos season: The 1981 Denver Broncos season was the team's 22nd year in professional football and its 12th with the National Football League (NFL). The 1981 season depicted Denver trying to improve on their 8-8 record in 1980. They did improve on their record, finishing 10-6. However, they would miss the playoffs by virtue of their head to head loss to the Buffalo Bills during the season. After a very fast 8-3 start, Denver would lose 3 of their final 5 games, including a critical loss to the Cincinnati Bengals in week 12. Denver would finish 8-0 at home, but a 2-6 road record proved to doom the Broncos at season's end.
Document 2: Pat Bowlen: Patrick Dennis Bowlen (born February 18, 1944) is the majority owner of the Denver Broncos of the National Football League (NFL). The Bowlen Family, including his two brothers John Bowlen and Bill Bowlen, and sister Marybeth Bowlen, purchased the team from Edgar Kaiser in 1984. He served as the Broncos CEO from his purchase of the club in 1984 until July 2014, when he stepped down as Broncos' CEO due to the onset and progression of Alzheimer's disease.
Document 3: 1985 Denver Broncos season: The Denver Broncos season was the team's 26th year in professional football and its 16th with the National Football League (NFL). Despite finishing with an impressive record of eleven wins and five losses, the Broncos failed to make the playoffs. The Broncos were coming off a loss to the Steelers in the divisional round, and were picked by many to make the Super Bowl at the end of the 1985 season. The Broncos would start out well, as they started 6-2 and 8-3. However, two losses in overtime to arch rival Los Angeles resulted in the Broncos needing to win their final two games of the season to try to sneak into the playoffs. They did just that, beating Kansas City 14-13 and Seattle 27-24. However, even though the Broncos finished 11-5, they failed to reach the playoffs by virtue of a tiebreaker with the New England Patriots. The tiebreaker was based on the teams' common opponents record; and the Patriots beat the Broncos in that category by finishing 4-2 against the Raiders, Seahawks, Dolphins, and Colts, while the Broncos finished just 3-3 against the same four teams. The 1985 Broncos are one of two teams in NFL history since the 1970 merger to end the season with eleven or more wins and not qualify for the playoffs. The other is the 2008 Patriots.
Document 4: 1999 Denver Broncos season: The 1999 Denver Broncos season was the team's 40th year in professional football and its 30th with the National Football League (NFL). After winning its second consecutive Super Bowl with a win over the Atlanta Falcons in Super Bowl XXXIII in Miami, the team suffered the retirement of Super Bowl XXXIII MVP quarterback John Elway during the off-season. Elway had spent his entire career with the Denver Broncos, and much of the focus in the weeks leading up to the season centered on the void left by Elway's departure. Head Coach Mike Shanahan announced that third-round 1998 draft pick Brian Griese, son of Miami Dolphins Quarterback Bob Griese, would take the reins of the offense, passing over veteran and credible back-up QB Bubby Brister.
Document 5: Stan Kroenke: Enos Stanley Kroenke ( ; born July 29, 1947) is an American business entrepreneur. He is the owner of Kroenke Sports & Entertainment, Denver Nuggets of the NBA, Colorado Avalanche of the NHL, Colorado Rapids of Major League Soccer, Colorado Mammoth of the National Lacrosse League and the Los Angeles Rams of the NFL.
Document 6: Clark Hunt: Clark Knobel Hunt (born February 19, 1965) is Chairman, CEO, and part owner of the National Football League's Kansas City Chiefs and a founding investor-owner in Major League Soccer. Hunt also serves as chairman of Hunt Sports Group, where he oversees the operations of FC Dallas and, formerly, the Columbus Crew of MLS. He is the son of Lamar Hunt and the grandson of oil tycoon H.L. Hunt. Following the death of his father Lamar Hunt in 2006, Hunt co-inherited ownership of the Kansas City Chiefs. Clark serves as the ultimate authority as Chairman and CEO.
Document 7: 1984 Denver Broncos season: The 1984 Denver Broncos season was the team's 25th year in professional football and its 15th with the National Football League (NFL). The team finished with its then franchise best record of thirteen wins and three losses and were champions of the AFC West. The season ended in a heartbreaking Divisional Playoff loss against the Pittsburgh Steelers. This would be the final season for Tight End coach Fran Polsfoot, who died in April 1985.
Document 8: History of the Denver Broncos: The history of the Denver Broncos American football club began when the team was chartered a member of the American Football League in 1960. The Broncos have played in the city of Denver, Colorado throughout their entire history. The Broncos did not win any titles as members of the AFL. Since the 1970 AFL–NFL merger, the Broncos have won 15 division titles, and played in eight Super Bowls, following the 1977, 1986, 1987, 1989, 1997, 1998, 2013, and 2015 seasons. They won Super Bowl XXXII, Super Bowl XXXIII and Super Bowl 50. Their most famous player is former quarterback John Elway, starting quarterback in five Super Bowls and holder of many NFL records. The Broncos currently play in the National Football League's AFC West division. Their current leadership includes owner Pat Bowlen, CEO Joe Ellis, VP John Elway, head coach Vance Joseph, and quarterback, Trevor Siemian.
Document 9: 2004 Denver Broncos season: The Denver Broncos season was the team's 45th year in professional football and its 35th with the National Football League. Head coach Mike Shanahan guided the Broncos to a 10-6 record, finishing 2nd in the AFC West. The Denver Broncos season ended in defeat to the Indianapolis Colts 49-24 in the Wild Card Playoffs.
Document 10: 2008–09 Denver Nuggets season: The 2008–09 Denver Nuggets season was the 42nd season of the franchise, 33rd in the National Basketball Association (NBA). They finished the regular season with 54 wins and 28 loses, the franchise's best record since 1987–88. The Nuggets ended their streak of five straight first-round exits after Carmelo Anthony was drafted in 2003, advancing to the Conference Finals, where they lost to the eventual champion Los Angeles Lakers in six games, ending the Nuggets season and playoff run.
Document 11: Steve Bisciotti: Stephen J. Bisciotti (born April 10, 1960) is the current majority owner of the Baltimore Ravens of the National Football League. He founded a family of technical staffing companies known as Allegis Group, which owns Maxim Healthcare, Aerotek, and TEKsystems.
Document 12: 2010 Denver Broncos season: The Denver Broncos season was the franchise's 41st season in the National Football League, the 51st overall and the 10th playing their home games at INVESCO Field at Mile High. The off-season was marked by the draft selections of Georgia Tech wide receiver Demaryius Thomas and All-American Florida quarterback Tim Tebow, as well as season-ending injuries to All-Pro linebacker Elvis Dumervil and free agent running back LenDale White. The team failed to improve on its 8–8 record from 2009, and set a new franchise record for losses in a single season, with a 4–12 record. The regular season was marked by a videotaping scandal dubbed "Spygate II" and the firing of head coach Josh McDaniels.
Document 13: 2008 Denver Broncos season: The 2008 Denver Broncos season was the franchise's 39th season in the National Football League, the 49th overall and the 25th under the ownership of Pat Bowlen. The Broncos improved from their 7–9 record from 2007, but failed to make the playoffs with an 8–8 record.
Document 14: Denver Broncos: The Denver Broncos are an American football team based in Denver, Colorado. The Broncos compete in the National Football League (NFL) as a member club of the league's American Football Conference (AFC) West division. The team began play in 1960 as a charter member of the American Football League (AFL) and joined the NFL as part of the merger in 1970. The Broncos are owned by the Pat Bowlen trust. The Broncos have played at Sports Authority Field at Mile High since , after previously playing at Mile High Stadium from 1960 to 2000.
Document 15: 2009 Denver Broncos season: The Denver Broncos season was their 40th season in the NFL and 50th season overall. The Broncos matched their 8–8 regular season record from 2008, but did not make the playoffs. The Broncos welcomed many new defensive players signed during free agency, including veteran Eagles safety Brian Dawkins. This was their first season without head coach Mike Shanahan since , as he was fired on December 30, 2008. On January 12, 2009, Denver hired former New England Patriots' offensive coordinator Josh McDaniels as their new head coach. At the time of his hiring, McDaniels was the youngest head coach in any of the four major North American professional sports and the fifth-youngest NFL head coach ever, though less than a week later the Tampa Bay Buccaneers named the even-younger Raheem Morris as their head coach.
ground_truth: Alzheimer's disease