U.S. Space Force Chief of Space Operations Gen. Chance Saltzman, Royal Air Force Chief of the Air Staff Air Chief Marshal Sir Rich Knighton, and U.S. Air Force Chief of Staff Gen. David Allvin sign a Shared Vision Statement on Combined Air and Space Power in the 21st Century at the RAF’s Global Air & Space Chiefs’ Conference in London, United Kingdom, July 17, 2024. The endeavor is a successive step in a long history of security cooperation and collaboration between the two nations and recognizes the need to rapidly adapt to a changing operational environment (Courtesy photo by Royal Air Force Cpl. Sarah Barsby).