Chen is a Tau'ri who was assigned to the Icarus Base in 2009.
In 2009, he and 80 others fled the base after an attack against the base, and evacuated to the Ancient spaceship Destiny. (SGU: "Air, Part 1")
He was wounded while Lucian Alliance forces arrived on board Destiny. He was taken to the Destiny infirmary and was treated by Lt. Tamara Johansen. n(SGU: "Incursion, Part 1", "Incursion, Part 2")