Squadron Officer School

Squadron Officer School (SOS), is a 5.5-week-long Professional Military Education (PME) course for U.S. Air Force and Space Force Captains, Department of the Air Force Civilian (DAFC) equivalents and International Officers. It fulfills the U.S. Air Force's requirement for primary developmental education (PDE). SOS is based at Maxwell AFB, Alabama, and the in-residence version of the course is taught there. SOS is an element of the Air University.