U.S. Marine Corps Brig. Gen. Sean Day, commanding general, Force Headquarters Group, Marine Forces Reserve, signs the Joint Task Force-Space Defense’s board during his visit to the organization at Schriever Space Force Base, Colo., June 28, 2022. Day received the JTF-SD mission brief in order to promote shared understanding across mission threads for operations in the information environment. The JTF-SD, and its National Space Defense Center, provide unprecedented unity of effort with the Department of Defense, Intelligence Community and National Reconnaissance Office to protect and defend against threats in the space domain. (U.S. Space Force photo by Tiana Williams)