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Laura Cadman is a retired United States Marine Corps Lieutenant Colonel.
- Height: 5'4"
- Eye Color: Grey
- Hair Color: Red
- ATA Gene Status: Untested
- WTA Gene Status: Untested
- GTA Gene Status: Negative
- Florida State University
- Husband: Lieutenant General Evan Lorne, United States Air Force
- Former Commander, Expeditionary Units Command
- Son: Ethan Kavan Lorne (Born 2020)
- Daughter: Alexandra Elizabeth Lorne (Born 2022)
- Explosives Ordinates Disposal Expert
- Detached Service to US Secret Service
- Training, Stargate Command
- 2004/2003 - 2004
- Stargate Command Team 12
- 2004 - 2005
- Atlantis Expedition
- 2005 - 2009
- USS George Hammond
- 2009 - 2011
- Chief Tactical Officer, USS Minotaur
- 2011 - 2016
- Marine Contingent Commander, Milky Way Alpha Site
- 2016 - 2020
- 2020 - Present
- - Second Lieutenant: 05/25/1994
- - First Lieutenant: Promotion Date Unknown - Sometime Prior to 2005
- - Captain: 2009
- - Major: 2011
- - Lieutenant Colonel: 10/04/2017
Born in 1972 Laura Cadman completed a degree in Electronics before joining the United States Marine Corps. After being commissioned she specialized in Explosives Ordinates Disposal (EOD). She further expanded her training to become an expert in high temperature and energetic materials technology, providing her with an in-depth knowledge of not just the properties, effects, and storage of high explosives, but also the ability to identify and detect unexploded bombs.
Following service during the Gulf War she went into a support role for the US Secret Service, and was assigned to multiple VIP missions. She continued expanding her expertise in both researching and identifying ordnance, as well as detecting the presence of chemical agents. Because of this, she became an instructor for other recruits, training them in the preparation and maintenance of EOD tools, equipment, and vehicles. Having already reached the rank of lieutenant, Cadman was proficient in operating emergency contamination control stations as well as emergency personnel decontamination stations and locating buried ordnance.
Following this she was read in on the Stargate Program and posted to Atlantis. She, together with Rodney McKay, were culled by a Wraith Dart on the planet Thenora during an off world assignment. Before the Dart was able to leave through the Stargate, however, it was shot down by John Sheppard. During re-materializing her and Rodney McKay's conciseness were both placed in his body. After several days of struggle the problem was finally remedied and was returned to her own body. After kissing Doctor Carson Beckett while still in Rodney's body.
She was scheduled to leave on the Daedalus when it returned to Earth but rejected the trip, making a request to Sheppard that she stay on Atlantis for a longer amount of time. When the Atlantis expedition was informed that there had been a bomb planted somewhere in the city by an agent of the Trust, it was because of Cadman's wish not to leave—as well as her expertise in explosives—that McKay suspected she was the agent. Sheppard quickly rose to defend her, however, saying that she was one of his most trusted officers and also questioning McKay's logic, as he more than anyone would know if she was a traitor. Cadman proved herself loyal, however, by lending the expedition her expertise in finding the bomb. Indeed, it was Cadman who eventually discovered that there had been several deletions made to the command log by Colonel Caldwell, proving that it was he who had set the bomb. During this time she also had a short lived romance with Dr Carson Beckett but they eventually broke it off.