Final answer:
An Airman must have a Career Job Reservation (CJR) approved at least four months prior to their Date of Separation (DOS) to reenlist in their current AFSC.
Step-by-step explanation:
The question itself revolves around the policy of reenlistment in the United States Air Force. Specifically, it asks about the Career Job Reservation (CJR) process, which is a system that manages the number of first-term Airmen who may reenlist in certain Air Force Specialty Codes (AFSCs) that might be overmanned or have limited vacancies. An Airman must have a CJR approved at least four months prior to their Date of Separation (DOS) to be eligible to reenlist in their current AFSC.