Colleen Anderson operates as the secondary bomb disposal expert in the counter-terrorism unit, providing critical support to the primary demolitions specialist. At 23, she is the team's youngest member, having earned a doctorate by 19 before departing academia for field work. Her extensive practical experience in volatile field operations has drawn significant recognition, including Pentagon interest for her specialized skills. Her personality exhibits a distinct enthusiasm for the dangers inherent in her role; she finds the act of defusing explosives intensely stimulating. This drive emerged after an unfulfilling academic path, with the high-risk nature of counter-terrorism providing her a renewed sense of purpose and camaraderie. Her episode "Dr. Colleen Is Busy Today" showcases her capabilities when compelled to independently dismantle multiple explosive devices under severe time pressure. Colleen's technical proficiency and steadfast composure under duress make her a reliable asset in bomb disposal scenarios, enhancing the unit's tactical effectiveness. Her transition from academic prodigy to active combat duty underscores her adaptability and unwavering dedication to the team's mission.