The Navy's engineer corps is called the Civil Engineer Corps (CEC), it is staffed by limited duty officers and chief warrant officers who are professional engineers and architects, acquisition specialists and Seabee Combat Warfare Officers. The CEC's main area of responsibility is planning and managing the design, acquisition, construction, operation, and maintenance of the Navy's shore facilities; the CEC falls under the command of the Naval Facilities Engineering Systems Command, the CO is a Rear Admiral who is required to have an advanced degree in mechanical engineering. The CEC's Seabee officers are sometimes called upon to perform construction and/or demolition jobs in combat zones, like in this instance Ray's cover is a CEC warrant officer building wells in a combat zone.