Secretary of the Air Force, Dr. Heather Wilson, tours the 22nd Space Operations Squadron during a visit to Schriever Air Force Base, Colorado, Friday, June 23, 2017. Wilson accompanied Vice President Mike Pence during the trip, which marked the first time a vice president has visited the base. Wilson, who has made space one of her early priorities, has now visited Schriever twice since her appointment as secretary in May. (U.S. Air Force photo/Staff Sgt. Wes Wright)