Kalfas was a Commander of the Tagrean Security Forces. He was frequently in opposition with Ashwan, the Tagrean head of state, particularly on matters of defense. Kalfas continually believed Ashwan was too "soft," and throughout his political career, Kalfas was winning more public opinion. When the Prometheus entered Tagrean orbit, Kalfas was quick to judge them as a threat after an explosion occurred in their air space (the detonation of its hyperdrive engine), sending rockets up to destroy the ship. Ashwan stopped the attack and permitted the ship to enter the atmosphere.