The Air Force is exploring possible uses for the forthcoming Next Generation Air Dominance fighters that involve leveraging collaborative combat aircraft outside of the program, a key official says, assigning those platform capabilities first to one formation and then another as command-and-control functions shift over the course of a given fight. But that potential future of warfare, which relies on a “family of systems” approach to the new NGAD program, could prove difficult and costly to buy within the Pentagon’s...