Which aircraft, derived from the Boeing 707, provides survivable airborne Nuclear Command, Control, and Communications as a communications relay and airborne command post?

• A. E-6 Mercury
• B. E-2 Hawkeye
• C. E-3 AWACS
• D. MQ-4 Triton

Answer: (A)

The key idea is a survivable airborne command post and communications relay for nuclear command and control. The E-6 Mercury fits this role exactly because it’s a Boeing 707 derivative specifically configured as TACAMO—Take Charge And Move Out. In a crisis, it provides a mobile, airborne means for the National Command Authority to issue orders and relay them to strategic forces, even if ground networks are compromised. Its systems are hardened and redundant, with extensive HF/UHF/SATCOM links to submarines and bombers, ensuring continuous NC3 connectivity in contested environments.

Other options focus on different missions. The E-3 AWACS is an airborne surveillance and battle-management platform with a radar dome, not primarily a nuclear C2 relay or airborne command post. The E-2 Hawkeye is a carrier-based early warning and control aircraft based on a different airframe, and the MQ-4 Triton is an unmanned reconnaissance aircraft. None of these are the survivable airborne NC3 command post that TACAMO provides.