NATIONAL HARBOR, MD -- The Air Force estimates establishing a new space service would cost $12.9 billion from fiscal years 2020 to 2025 and require an additional 13,000 personnel, according to a new memo obtained by Inside Defense . In the Sept. 14 memo, signed by Air Force Secretary Heather Wilson, the service projects that standing up a separate Space Force would cost $3.2 billion in FY-20 and $12.9 billion across the future years defense plan. That cost includes headquarters,...