"I can't think of higher praise."
In 2375, during the Dominion War, he was assigned to AR-558, a planet that the Federation Alliance had captured from the Dominion. His commanding officers were Captain Loomis, and Commander Parker. Fellow members of his unit included Reese, Vargas and Nadia Larkin.
Eight months later, the majority of the original members assigned to protect the planet's communication array were dead, including Loomis and Parker. Larkin now commanded the troops. With support from the crew of the USS Defiant, including Ezri Dax, whom he befriended, Kellin successfully managed to expose the subspace anti-personnel mines (known as "Houdinis") that had threatened them, eventually turning them on the Jem'Hadar.