The Chief of the Air Staff's Air Power Workshop, sometimes known merely as the CAS Workshop, is a small working group of senior scholars and other theorists convened by the Chief of Air Staff, the professional head of the Royal Air Force. Run by the successive Directors of Defence Studies (RAF), the Workshop develops and debates cutting-edge ideas on air power and sporadically produces books containing the findings.[1][2] Current members include Group Captain Al Byford, Mr Sebastian Cox (Head of the Air Historical Branch), Professor Philip Sabin, Dr Joel Hayward, Dr David Jordan and Dr Christina Goulter.