Doomsday planes ensure nuclear command continuity, from Cold War EC-135 Looking Glass mirroring SAC alerts to E-4 Nightwatch presidential bunkers, E-6 Mercury TACAMO relays, and retired E-8 JSTARS. Featuring EMP shielding, aerial refueling, and 24/7 readiness, they sustain leadership and retaliation in catastrophic scenarios.
In 1960, the United States Air Force initiated Operation Looking Glass, the conversion of five KC-135s into airborne command and control centres. In the case of nuclear war, these aircraft would take off with top military personnel, and from the skies could mirror the capabilities of a command post on the ground, including transmitting ICBM launch codes, networking with other posts, and continuing presidential command.
Today we are going to look at what have become known as doomsday planes. Over the years they have been modernised to remain current and ready, should there be a nuclear war.
LOOKING GLASS
The story of these doomsday planes begins in the Cold War. In 1960, Strategic Air CommandThe U.S. Air Force’s primary organization for long-range nuclear deterrence during the Cold War, responsible for maintaining and, if necessary, delive... More ordered the conversion of five new KC-135s. The premise was simple; in the case of nuclear war, command posts would likely be lost, resulting in many contingency issues for air, sea, and ground forces. An airborne platform, able to avoid the destruction on the ground, was the proposed solution, made possible thanks to technological breakthroughs in the late 50s.
These converted KC-135s would come to be referred to as EC-135s, equipped to fill the role.
Conversion of the aircraft into an airborne command platform was done rather quickly and by July 1st, 1960, the first operational testing had begun. Onboard each aircraft would be a general officer, who would have mission oversight, similar to the National Command Authority on the ground. In the case of an emergency, if communications with the ground were lost, this officer would assume a role known as Airborne Emergency Action Officer; thrusting the officer on duty from overseeing a single flight to commanding the nuclear arsenal of the United States.
Referred to as Looking Glass, the aircraft’s onboard systems were made to mirror what those of the command centre on the ground, stripped back but with the same core capabilities. Notably, Looking Glass systems could transmit launch authorisation to ICBMs even if the launch facilities on the ground were inoperable. Specifically, the EC-135 would base its systems on US Strategic Commands Global Operations Center at Offut Air Force Base.
The role of this airborne command also included a variety of other hypothetical tasks. In the case of a catastrophic national emergency such as nuclear war, the crew onboard would have the more complex job of aiding continuity of US leadership, or if need be, helping reconstitute governance, albeit from 35,000 feet. The Commander in Chief would also be placed on board for his safety if necessary.
Thus, unlike most other crews – fighter crews, bombers, refuelling, and so on – who could simulate their specific missions with a relatively high degree of certainty, the crews of the Looking Glass could not. They would have an extremely complex undertaking ahead of them if war actually began— their jobs could never be fully simulated in training, and the responsibility they would have to carry in the case of a crisis was enormous.
On February 3, 1961, a historic undertaking would begin. With tensions between east and west high, Operation Looking Glass would go into effect, with continuous 24/7 rotation for airborne operations. Amazingly, this continuous rotation of flights would continue for almost 30 years, ending on July 24, 1990, totalling 281,000 flying hours. These aircraft were initially EC-135A’s converted from KC-135Bs, but dedicated platforms arrived in 1964; the EC-135C.
During the 1960s, Operation Looking Glass would form the heart of the World Wide Airborne Command Post Network, which would consist of five areas of operation: Silk Purse in US European Command, based in France and later RAF Mildenhall; Scope Light for US Atlantic Command, operating out of Langley Virginia; Blue Eagle for US Pacific Command, operating from Hawaii; And Nightwatch, operating domestically, usually in support of the president, based out of Maryland.
In the case of an emergency, aircraft from any of these five areas of operation could take to the sky, establish wireless connections, and secure command if necessary.
After 1990, continuous flights were halted, however crews remained on 24 hour alert, ready to scramble at any time. In 1992, Strategic Air CommandThe U.S. Air Force’s primary organization for long-range nuclear deterrence during the Cold War, responsible for maintaining and, if necessary, delive... More was disbanded, however the EC-135s would remain operating in this alert-ready state through to 1998.
Over its 38 years in service, the EC-135 had flown every command-and-control post mission save for a single flight on March 4 1980, which saw the new E-4 platform tested in its place. The aircraft’s record was essentially flawless. The platform would be decommissioned in 1998, with the final aircraft being converted into a WC-135 Constant Phoenix nuclear detection platform.
E4 NIGHTWATCH
In the early 1970s, a new aircraft had entered service which would compliment the EC-135 fleet. This would be a modified BoeingThe Boeing Company: A global aerospace leader and one of the world’s largest defense contractors, specializing in the design and manufacture of milita... More 747, referred to as the E-4 Nightwatch.
As the reporting name suggested, the E-4 would primarily fill the Nightwatch task, operating domestically, with a specific focus on transporting, protecting, and relaying the commands of the President in the case of an emergency. It would not replace the EC-135 in the Looking Glass role but rather complement it.
Four aircraft would be built, with the first entering service in 1974. Interestingly, it would use a unique blend of cutting-edge tech, with older analogue systems to maximise survivability. A countermeasures suite – very advanced for its time – protected the aircraft from ground and air threats. It is widely reported that systems on board are shielded from electromagnetic interference, keeping the aircraft running in the case of an EMP blast.
As a further protective measure in the cockpit, older systems were installed; initially glass cockpit components were rejected in favour of analogue flight controls, on the basis that they would offer better survivability against electronic threats.
With three decks full of equipment, the aircraft still had plenty of room. In fact, in wartime it can carry up to about 112 personnel, the largest crew out of any US Air Force aircraft in history. Beyond the main crew, and the president himself, in wartime it would likely carry the Secretary of Defence. On a normal mission, the standard crew is roughly 48.
Official endurance is around 12 hours unrefuelled, however, in an emergency, with aerial refuelling, duration is limited mainly by crew and consumables and the need to replace oil and other lubricants. Given the speed at which a large-scale attack would play out, the aerial platform provides sufficient time for the necessary tactical and administrative tasks – at least in theory
Inside, the E-4 features one of the largest set of systems in any Air Force aircraft. The middle deck – for example – contains a conference room complete with large screens, a technical compartment which operates all communications in and out of the aircraft, an operations compartment complete with a variety of automated computer systems considered highly advanced in the 1970s, as well as other compartments.
Since its introduction in 1974, the E-4 has remained in continual service, always at the ready.
E6 MERCURY
By 1997, yet another aircraft in this series of airborne command and control platforms would be introduced. Referred to as the E-6 Mercury, it would be operated by the US Navy.
The Alpha model of the E-6 had entered Navy service in 1989, with the future goal of supplementing and then taking up Looking Glass operations from the ageing EC-135 fleet. 16 aircraft were built and delivered between 1989 and 1992. Newer and far more advanced than the EC-135, the Mercury was far better future-proofed, ready for the digital age.
During the mid 1990s these aircraft began an upgrade program to Bravo standard, further improving the aircraft to fill the Looking Glass mission. In 1997, this fleet of 16 E-6Bs replaced the EC-135, with all aircraft upgraded to Bravo by 2006.
This was an interesting development. The crucial task of airborne command and control, as well as the broad mission type, Take Charge And Move Out (or TACAMO), was now under Navy supervision. However, it would require close cooperation with the Air Force to function properly. For example, the E-6 doesn’t conform to the Navy probe-and-drogue refuelling method, instead requiring a boom. This means Air Force refuelling aircraft are necessary, and given the nature of the mission, refuelling is almost certainly going to be necessary.
The E-6 continues to serve, although plans exist for its TACAMO role to be replaced by a variant of the Hercules; a C-130J-based ‘E-130J’, which offers higher reliability and lower operating costs.
E8 JSTARS
One final platform worth mentioning is the E-8 Joint Surveillance Target Attack Radar System (or JSTARS), which was used by the US Air Force between 1991 and 2023. Primarily intended to act as an intelligence, surveillance, target acquisition and recon platform (ISTAR), the aircraft could also operate in a Battle Management role.
While not conforming to the same doomsday role as the other three platforms, the aircraft has long been thrown into the same category due its similarities.
Technologically advanced, the platform in its standard ISTAR tasking had the ability to easily pinpoint ground threats using Ground Moving Target acquisition, which could be displayed on large monitors, allowing crews to overlay such data onto high resolution ground imagery. This gave it a significant edge over lower resolution synthetic aperture imagery found on the strike aircraft the JSTARS would usually be in contact with.
However, it was also intended by the Air Force to fill crucial battle management roles in the case of a full-scale war. In this role, crews could coordinate with ground and sea assets, as well as other Air Force assets in the sky. In theory it could take over certain roles from the E-6 or E-4, although in practice it would have likely supplemented them.
The distinct advantages held by the E-8 was unmatched by either of the other two platforms; specifically, its wide array of ground asset management tools could assist other air assets in target acquisition, damage reports, and so on.
As a one-of-a-kind platform, the E-8 would retire in 2023 without a similar replacement. The USAF would opt to use satellites for its intelligence gathering, surveillance, and reconnaissance activities once performed by the E-8, but now with equally matched or faster data acquisition and transfer.
CONCLUSION
The future of the airborne command and control centre role remains unclear. The US Navy desires to move away from the E-6 in favour of a new TACAMO platform. It is presumed that this role will be filled by the E-130J, ready by the end of the decade. The US Air Force faces a similar problem, with the far older E-4 platform. The proposed solution is the Survivable Airborne Operations Centre, built around a new E-4 – the E-4 Charlie – based on the modernised 747-8 intercontinental. Sierra Nevada Corporation were awarded a $13B contract to deliver the platform, which is expected to be operationally ready by mid-2030s. This will likely compliment the Navy’s Hercules command post platform.
These aircraft filled several critical roles during the Cold War, when the risk of nuclear conflict was high. Had a war broken out, their full utility in overseeing forces, coordinating the battle space, protecting key figures, and maintaining governance would have been realised. Thankfully, from introduction until retirement of the role, no such scenario ever occurred.
The crews – especially those of Operation Looking Glass – rarely receive any recognition and these programs have largely been forgotten. If catastrophic war or crisis had occurred, these select few pilots and crews would essentially carry the United States – and by extension a good deal of the West – on their shoulders, as they decided on retaliation strikes, coordination of forces, and perhaps administrating the continuity of governance.
It is a remarkable piece of defence history that continues to evolve today with modern airborne command platforms.
