Jack O'Neill
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- Joined the United States Air Force during the Vietnam War
- 1996: Led the original mission through the Stargate to Abydos, killed Ra
- 1997-2004: Lead SG-1 on many missions through the stargate
- 2004: Made commander of Stargate Command
- 2005: Made commander of Homeworld Security
- Jonathan O'Neill
- 1995: lost his son, Charlie fatally shot himself, with Jack's gun, inside their home
- Chicago, Illinois, USA, Earth
- Richard Dean Anderson (Stargate)
- Captain (1980s)
- Colonel (1990s-2004)
- Brigadier General (2004-2005)
- Major General (2005-2009)
- Lieutenant General
- Charlie O'Neill (Son) †
- Sara O'Neill (Ex-Wife)
- Samantha Carter (Partner)
- Human
- 1952