Eight months following his field promotion, Watters and his crew rescued Jake Sisko and Nog when their runabout was attacked by a Jem'Hadar vessel. Recognising Nog's engineering experise, Watters promoted the Ferengi ensign to Chief Engineer aboard the Valiant and enlisted his help in carrying out the crew's original mission: eliminating a new type of Jem'Hadar battleship.
For all his bravery and confidence in his crew, Watters proved to be a less than competent captain. He was convinced that he and is squad could achieve anything and the captain himself repeatedly took stimulants, presumably to counter the tremendous pressure of his job. In the end, when the Valiant engaged the Dominion battleship, his plan to exploit a supposed weakness in the ship's design failed spectacularly. Watters was killed along with almost all of his crew, the only survivors of the fiasco being Cadet Dorian Collins, Nog and Jake Sisko who fled in an escape pod before the Valiant was destroyed.