Delta Sector was an elite black ops division within the United States government and deployed highly skilled operatives, infiltrators and assassins.

Ronald Sandoval enlisted the aid of Delta Sector operative to first kill the Companion Protector of the Taelon Ram and later to determine the loyalty of Liam Kincaid. (Episode: Subterfuge) Members within the Atlantic National Alliance dispatched another agent to terminate Sandoval after he attempted to defect and leave Taelon service. (Episode: Atonement)