The 27th secretary of defense has tasked the Joint Staff with developing a Joint Warfighting Concept for the services by December 2020. Developing Joint all-domain command and control (JADC2) as a concept is a key goal of the 20th CJCS. An OSD/Joint Staff Cross-Functional Team for JADC2 is underway. The 27th secretary of defense ordered the four services and the Joint Staff to create a new joint warfighting concept for All-domain operations, operating simultaneously in the air, land, sea, space, cyber, and the electromagnetic spectrum (EMS). The Joint Chiefs and Combatant Commanders witnessed demonstrations of the concept in September 2020.