e-4 | national command post
The E-4B serves as the National Airborne Command Post (NACP) and is a key component of the security and command capabilities for the Prime Minister, the Minister of Defence, and senior Military staff. The Air Force maintains a dispersed fleet of E-4Bs, which are based out of with operational squadrons based in each Multirole Regional Air Wing.
The E-4B serves as the National Airborne Command Post (NACP) for the senior civilian and military authorieis. In case of national emergency or destruction of ground command control centres, the aircraft provides a modern, highly survivable, command, control and communications center to direct Military forces, execute emergency war orders and coordinate actions by civil authorities.
Other responsibilities include a worldwide, survivable enduring node of the Military command structure for the purpose of exercising national security responsibilities throughout the full spectrum of conflict.
The E-4B, a militarised version of the Boeing 747-200, is a four-engine, swept-wing, long-range, high-altitude airplane capable of being refuelled in flight, providing it a largely unlimited range and time in the air. Its larger size provides approximately triple the floor space of the earlier command post.
The 747-200 is considered an old airframe - however, it has many analogue components which provide it with enhanced survivability in an environment of electromagnetic complexity.
The main deck is divided into six functional areas: a VIP or Commander's work area, conference room, briefing room, an operations team work area, and communications and rest areas. An E-4B crew may include up to 114 people, including a joint-service operations team, a flight crew, a maintenance and security component, a communications team and selected augmentees.
The E-4B has electromagnetic pulse protection, an electrical system designed to support advanced electronics and a wide variety of new communications equipment. Other improvements include nuclear and thermal effects shielding, acoustic control, an improved technical control facility and an upgraded air-conditioning system for cooling electrical components. An advanced satellite communications system improves worldwide communications among strategic and tactical satellite systems and the airborne operations center.
To provide direct support to the New Hayesalian Government, at least one E-4B is always on alert at one of many selected bases throughout the world.
The E-4B fleet is undergoing numerous improvements to maintain flight worthiness and improve command, control, and communications capabilities. The next near-term major improvement is a Block 1 modification and includes an Audio Infrastructure Update, Global Air Traffic Management compliance updates, and the Senior Leadership Communications System.
The E-4B evolved from the E-4A, which had been in service since late 1974. The first B model was delivered to the Air Force in January 1980, and by 1985 all aircraft were converted to B models.
In 1994, the E-4B assumed an additional role. E-4B will support the local and national government requests for assistance when a natural disaster or other major civil emergency occurs. The E-4B would be tasked to fly the Emergency Response teams to the disaster site, and become the command and control center until the emergency team's own equipment and facilities can be set up. With E-4B support the emergency team's response is a matter of hours as opposed to days.
The Minister of Defence, by law, undertakes all air travel where practicable on an E-4B aircraft.