First season executive producers John Wells and Michael Crichton reprised their roles. Wells continued to serve as the series head writer and showrunner. Lydia Woodward and Mimi Leder returned as co-executive producers. New producer Carol Flint filled the third co-executive producer position following the departure of Robert Nathan. Christopher Chulack continued to act as the episodic producer. Paul Manning and Wendy Spence Rosato also continued in their first season roles as producer and associate producer respectively. Several changes occurred with the production team mid-season - Leder left the crew, Manning was promoted to supervising producer, and Spence Rosato was promoted to co-producer.