Sarah Cantrell was a human Ranger from Mars Dome One. In 2265 she was assigned to the Anla'Shok vessel Enfali when it was crippled by Raiders. Later, during David Martel's disciplinary hearing over his order to stand down, Ranger Dulann stated that if Martel was expelled that he, Malcolm Bridges and Sarah would join him. After Martel was given command of the Liandra, Sarah joined the crew as weapons and tactical-combat specialist.