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The most resilient aircraft in the United States has just written a new chapter in a story that started half a century ago. The Air Force and Sierra Nevada Corporation They have launched the First flight tests of E-4C SAOC, direct successor of the E-4B Nightwatchthe family of “Final Judgment” that guarantees the continuity of command even in the worst scenario. Recently, a giant based on a Boeing 747-8he first took off from Dayton, Ohio, opening a trial campaign that will last in the coming months and that opens the transition to a more modern fleet. With this step, the North American country begins to replace flying bunkers that approach at the end of its useful life. It is not a new concept: we talk about the evolution of a system that combines government continuity, safe communications and nuclear deterrence. The SAOC program, with a contract of More than 13,000 million dollars Awarded in 2024, it is a change of method in the Pentagon: for the first time, the original manufacturer of 747 does not lead the integration and responsibility falls to a company specialized in large conversions, which has brought together first level partners to build the most advanced command plane of its time. That inaugural flight is the first step of a decade of work to deliver a platform capable of continuing to operate when everything else fails. A new chapter for the most strategic plane in the United States The SAOC (acronym for surviving Airborne Operations Center) is the most ambitious Air Force project to reinforce its network of Nuclear control, control and communications. Its mission is clear: to ensure that, although the strategic centers on land remain unused, the country’s leadership can coordinate a military response and Maintain control of the armed forces from the air. It is no accident that these aircraft are known as “final judgment planes”: they are designed to be the last resort in a scenario where everything collapses, operating as a true flying pentagon. The first generation of this platform, the E-4B Nightwatch, entered service in the seventies on the basis of a Boeing 747-200. Currently, the United States maintains four units Active, all deployed in the Offutt Air Base, Nebraska. Despite their robustness, the passage of time passes by an invoice: each plane has decades in service, the spare parts are increasingly difficult to get and Its availability is barely 55%. Keeping these giants operational is a expensive task, and the Air Force plans to remove them at the beginning of the next decade. The renewal is already underway. Sierra Nevada has received four of the five Boeing 747-8i acquired from Korean Air, and in them are applied deep modifications. Dayton, Ohio, and Wichita, Kansas They concentrate the Conversion and test operationswhich will be extended at least until 2026. This staggered plan will allow the new aircraft to enter into service while the E-4B begin to withdraw, always maintaining an operational nucleus that ensures the continuity of government. A E-4B Nightwatch currently operational The technological jump is evident. The 747-8 is the last large commercial aircraft of four engines made in the United States, with greater fuel capacity, more efficient engines and a broader fuselage than its predecessor. These characteristics make it the ideal base for an airplane that needs to sustain prolonged operations with refreshing in flight. The 747-8 cell also provides growth margin to integrate advanced communications, reinforced armor and redundant systems, all designed to survive electromagnetic pulses or cyber attacks. E-4B Nightwatch Decades of antiquity in flight At an industrial level, the program also makes a difference. Although Boeing remains the original 747 manufacturer and provides structural support, this time does not lead the project: the Air Force opted for an open data model to ensure that the government owns the design and can modify it in the future without depending exclusively on the OEM. Boeing It was out of the bid in 2023 after disagreements on the terms of the contract and data rights, which opened the door to Sierra Nevada Corporation as the main contractor. The company, known for its high complexity projects, has formed a team with giants like Lockheed Martin, Collins Aerospace and Rolls-Royce to create an unprecedented platform in the military. His role in recent history reinforces the need for this investment. E-4B have participated in critical events: from government continuity exercises to emergencies such as September 11, 2001 attackswhen at least one of these aircraft took off to provide safe communications in the middle of chaos. These aircraft have routinely accompanied the Secretary of Defense on International Travel, remain on alert during presidential speeches to Congress and act as a support network when national security protocols are launched. In the popular imaginary they appear little, but their mere existence is part of the United States deterrence strategy. The E-4C SAOC is, more than an update, a long-term bet. The contract signed with Sierra Nevada is It extends until 2036which reflects the magnitude of the technical challenge and the necessary time to complete the conversion of the aircraft, certify and deploy them fully. With this plan, the United States ensures that the most critical piece of its system of Nuclear control and control It will remain in force for decades. Although many details, such as the exact equipment of antennas and systems, are still classified, what is already underway is a clear message: the ability to direct the country in a global crisis depends on a strategic investment that seeks to always have a command center in the air. Images | Sierra Nevada | Balon Grayjoy | Defense Department In Xataka | Aviation enters a new era: seats are no longer tarified, emotions are tarified