The final two years of the four-year program comprise the Professional Officer Course (POC). It consists of four three-credit Air and Space Studies courses, a non-credit leadership laboratory each semester, and PT twice weekly. POC cadets earn a $350/juniors and $400/seniors-per-month, tax-free subsistence allowance during the academic year and incur a military obligation after contracted. To be accepted into the POC, students must pass a physical examination and an AP officer qualification test, a physical fitness test, and meet certain academic standards. Cadets must complete field training is normally administered the summer before POC entry. In addition, all POC cadets must complete a course in mathematical reasoning prior to being commissioned.