Kevin Marks

"Major Marks, please make that ship go away."

- Col. Steven Caldwell

Kevin Marks is a Major in the United States Air Force and a senior officer aboard several Earth vessels, including the USS Prometheus, the Odyssey, the Apollo, the Daedalus, and most recently the George Hammond.

2005
As a First Lieutenant, Marks served in an auxiliary control room aboard the Prometheus, where he used the ship's Asgard sensors to detect and map the exterior of a subterranean structure beneath a hilltop in Glastonbury Tor, England. He was able to define a large main cavern as well as a network of smaller tunnels and caves, aiding SG-1's efforts to locate a stash of treasure left there by Merlin. He was also involved in cataloging the items recovered from the site, locating the Ancient long-range communication device among the collection.

Marks later assumed a bridge post as the Prometheus' weapons officer, where he served during the mission to Kallana where the first Ori Supergate was encountered.

He later helped in the search for the Naquadah bomb and helped beam the building it was in into orbit.

2006
By early 2006, he had been promoted to the rank of Captain. He piloted the Prometheus on its final mission, to destroy an Ori satellite over Tegalus. When the satellite's attacks left the vessel crippled, Colonel Lionel Pendergast sent him with Lt. Colonel Samantha Carter to attempt repairs to the sublight engines; despite injuring his left arm, he did his best to assist, though their efforts ultimately proved unsuccessful. When Pendergast ordered the Prometheus' evacuation, Carter beamed him into the Caledonian Federation, though he was hesitant to leave.

Following this, he was promoted once again, to Major, and assumed a bridge post aboard the Odyssey, often but not always as the ship's pilot. He took part in the battle with Ba'al's Ha'tak.

Later, he took part in the Battle of P3Y-229. He was fortunate to survive the massive Ori invasion, as his ship was only one of two out of a dozen ships to survive the battle.

He joined SG-1 on a mission to a planet that had fallen to the Ori. He detected an energy wave coming from the Stargate and Colonel Paul Emerson ordered him to beam them aboard.

When Lucian Alliance forces under the command of Anateo ambushed the Odyssey and chased it into a minefield, he was knocked unconscious and captured by the Alliance. He helped Dr. Daniel Jackson and Vala Mal Doran retake the ship and assumed his post on the bridge.

2007
He and the Odyssey embarked on a mission to an unnamed planet to destroy the Naquadah being stockpiled by Arkad and the Illac Renin. He fired on a Tel'tak that was trying to escape and destroyed it, causing a massive secondary explosion.

Marks piloted the Odyssey on its mission to Orilla. When three Ori warships exited hyperspace, he used the newly installed Asgard plasma beam weapons to destroy one of the ships. Later, he along with the rest of the crew were transported to P3X-474 and used the Stargate to return to Earth after the Ori proved able to track the ship.

He was on the Odyssey with SG-1 on a misson to the Alteran home galaxy in order to find the Ark of Truth. He was on the ship to hold it off from being taken over by the rebuilt Replicators. He and Lt. Colonel Samantha Carter barricaded themselves in the Asgard computer core room and searched for the deactivation command. They were unable to find it in the Asgard computer core but Lt. Colonel Cameron Mitchell was given the location by James Marrick.

2008
Marks was later on transferred to the Apollo when it was upgraded with the Asgard plasma beam weapon. He was taking part in holding off the Asurans and their fleet of Aurora-class warships so Dr. Rodney McKay and his team could destroy Asuras and wipe out the Pegasus replicators. This seemed to be more of a temporary posting as he has been seen most recently on board the Daedalus.

Marks served on the Daedalus when it went to the planet M2S-445, where Teyla Emmagan was held by Michael Kenmore. He successfully destroyed Michael's cruiser on that mission.

It was revealed that he recently gave Teyla training on the Daedalus' systems when the ship was in orbit over Atlantis. He offered it to Ronon Dex as well, but he refused. This training came in handy when the team was stranded on the alternate Daedalus.

Later on, he was in the weapons chair on the Daedalus when Todd arrived and was stunned along with the rest of the bridge crew when the Wraith took over the ship. During the ship's descent towards the surface of M6H-987, he tried to regain control of the ship's systems, finally succeeding moments after Lt. Colonel John Sheppard took the Daedalus and Katana's ship through the planet in hyperspace.

2009
Marks and the Daedalus later attempted to stop the ZPM powered Hive Ship before it was fully upgraded but the Daedalus was utterly outmatched, only managing to escape when the hive jumped into hyperspace to attack Earth.

Marks was at the helm of the USS George Hammond during the attack on the Icarus Base in 2009. He detected a massive build-up of energy from the planet. Commander of the 304, Col. Samantha Carter, ordered Marks to recall Telford and his F-302s; the ship was badly damaged and they were going to jump to hyperspace.