The Air Force no longer believes a recapitalized E-8C Joint Surveillance Target Attack Radar System aircraft could adequately perform its mission in contested airspace, and is still deciding whether to pursue that multibillion-dollar acquisition for permissive environments, the head of Air Combat Command said Monday. The service is weighing the pros and cons of piecing together a network of command-and-control, intelligence, surveillance and reconnaissance assets like Northrop Grumman's Block 40 RQ-4 Global Hawk and Army and Navy radars without relying...