U.S. Army Gen. James Dickinson, U.S. Space Command commander, and U.S. Space Force Lt. Gen. Stephen Whiting, Space Operations Command commander, host Army Gen. Mark Milley, chairman of the Joint Chiefs of Staff, on March 21, 2012, at Schriever Air Force Base, Colorado. USSPACECOM and SpOC leaders provided the 20th CJCS an overview of their respective mission areas during the visit. (U.S. Space Force photo by Dennis Rogers)