349th Operations Support Squadron holds assumption of command ceremony Published Jan. 30, 2014 By Senior Airman Cindy Alejandrez 349th Public Affairs TRAVIS AIR FORCE BASE, Calif. -- Lt. Col. Christopher Von Thaden, takes command of the 349th Operations Support Squadron during an Assumption of Command ceremony, Jan. 26. Previously, Von Thaden participated in major operations such as Desert Storm, Northern Watch, Southern Watch, Uphold Democracy and Red Flag.