The Air Force ROTC two-year program and the last two years of the four-year program are the same at the Professional Officer Course level. However, the entry procedure differs. Entrance into the Professional Officer Course is highly competitive. Two-year applicants must successfully complete a six-week field training encampment. Two-year applicants are not committed to the Air Force until they return to school in the fall and make a decision to enroll in Air Force ROTC. Students must apply during the fall term of their sophomore year for this program.