James Drew: Northrop calls for quicker JSTARS schedule as “E-8D” takes shape. In: Flightglobal.com. 4. September 2015, abgerufen am 4. September 2015 (englisch): „Northrop Grumman says it shouldn’t take 16 years for the US Air Force’s to recapitalise the Boeing 707-based E-8C Joint Surveillance Target Attack Radar System, and it doesn’t need an 11-month “risk-reduction” phase to get started.“