Participants from the Spanish Air and Space Force, alongside their mentor from the United Kingdom Royal Air Force, monitor and track a simulated satellite in close proximity to the International Space Station during day four of Global Sentinel 2022 at Vandenberg Space Force Base, Calif., July 28, 2022. Day four focused on geosynchronous orbit rendezvous proximity operations and supports the tenets of responsible behavior in space as part of on-going spaceflight safety scenarios. Global Sentinel scenarios provide a platform for U.S. and allied partners to build partnerships, hone communication practices and exchange ideas for operations in the space domain. (U.S. Space Command photo by John Ayre)