Newest Director of the Air National Guard pens letter to Airmen Published March 22, 2013 ANG Special Staff Public Affairs JOINT BASE ANDREWS, Md. -- Air Force Lt. Gen. Stanley E. Clarke III assumed responsibility as the 15th Director of the Air National Guard in a ceremony hosted by Army Gen. Frank Grass, Chief of the National Guard Bureau. Read Gen. Clarke's letter to Airmen here: Letter to Guard Airmen