U.S. Space Force Maj. Gen. Timothy Sejba, commander of Space Training and Readiness Command, speaks during the Space Delta 11 change of command ceremony at Schriever Space Force Base, Colorado, June 10, 2025. Sejba praised outgoing commander Col. Jay Steingold’s leadership and welcomed incoming commander Col. Agustin “Rico” Carrero. The ceremony marked a leadership transition for Space Delta 11, the Space Force’s range and aggressor unit responsible for delivering advanced training and threat replication in support of space warfighters. (U.S. Space Force photo by Isaac Blancas)