Air and Space Basic Course (ASBC) is a Professional Military Education (PME) course taught by the Squadron Officer College, Air University, at Maxwell AFB, AL. It is the first level of PME for U.S. Air Force second lieutenants and is required regardless of commissioning source. Together with the Squadron Officer School, ASBC completes the Air Force basic developmental education (BDE) program. Each ASBC class has approximately 12 students and is taught by an Air Force Captain.