The Pentagon expects to finalize joint requirements for four major areas underpinning a new "Joint Warfighting Concept" by late spring, according to a top military official. Vice Chairman of the Joint Chiefs of Staff Gen. John Hyten said the Joint Requirements Oversight Council -- which he chairs -- has established four "supporting concepts" underneath the new Joint Warfighting Concept: Joint Global Fires, Joint All-Domain Command-and-Control, Contested Logistics and Information Advantage. "Sometime in the late spring, the JROC . . ...