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. As the NATO alliance celebrates its 75th anniversary, this shared vision exemplifies U.S. efforts to work with NATO allies and European partners to adapt and modernize its approach to challenges in an era of Great Power Competition (Courtesy photo by Royal Air Force Cpl. Sarah Barsby).