In the second season episode "Awakening", when the Destiny stops nearby an Ancient Stargate seeding vessel, Telford goes on board as an escort to T.J. to evaluate a mysterious alien who has awakened inside the ship.
In "Blockade" when Eli and Rush come up with a plan to recharge Destiny inside a blue supergiant star, Telford switches with Lieutenant Matthew Scott to discuss the plan and doesn't like it, but agrees to pitch it to the people on Earth.