The primary aircraft set to replace the Boeing E-3 Sentry airborne early warning and control (AEW&C) aircraft is the Boeing E-7 Wedgetail. The E-3 is based on theBoeing 707 airliner and is readily recognized by its large rotating dome. While the E-7 Wedgetail may not look as impressive, with its fixed-mounted radar, it offers a generational leap in capabilities.