Lt. Col. David Levene, Multi-Domain Test Force commander, addresses the crowd at the Air Force Test Center Detachment 1 MDTF Assumption of Command ceremony July 9 at Nellis Air Force Base, Nevada. The MDTF will serve as the connective tissue for test environments that aim to bridge air, land, maritime, cyberspace, space, and electromagnetic spectrum domains. (U.S. Air Force photo/1st Lt. Christine Saunders)