{"id":63126,"date":"2026-01-27T22:08:16","date_gmt":"2026-01-27T21:08:16","guid":{"rendered":"https:\/\/www.outono.net\/elentir\/?p=63126"},"modified":"2026-02-05T21:57:16","modified_gmt":"2026-02-05T20:57:16","slug":"the-operation-to-keep-the-e-4b-nightwatch-the-doomsday-plane-in-the-air","status":"publish","type":"post","link":"https:\/\/www.outono.net\/elentir\/2026\/01\/27\/the-operation-to-keep-the-e-4b-nightwatch-the-doomsday-plane-in-the-air\/","title":{"rendered":"The operation to keep the E-4B Nightwatch, the 'Doomsday Plane', in the air"},"content":{"rendered":"<p>Although the US Air Force is well known for its fighter jets and bombers, one of its most important aircraft is not even armed.<!--more--><\/p>\n<p><rel><a href=\"https:\/\/www.outono.net\/elentir\/2022\/05\/10\/e-4b-nightwatch-this-is-the-inside-of-the-doomsday-plane-of-the-us-air-force\/\">E-4B Nightwatch: this is the inside of the 'Doomsday Plane' of the US Air Force<\/a><\/rel><br \/>\n<rel><a href=\"https:\/\/www.outono.net\/elentir\/2024\/09\/29\/usaf-kc-10-extender-tanker-aircraft-farewell-repeats-b-52-stratofortress-bomber-paradox\/\">USAF KC-10 Extender tanker aircraft farewell repeats B-52 Stratofortress bomber paradox<\/a><\/rel><\/p>\n<p><strong>Outwardly, the E-4B Nightwatch closely resembles the famous \"Air Force One\"<\/strong>, the aircraft that transports the President of the United States on his trips, as both are based on the same commercial airliner: the Boeing 747. However, <strong>the E-4B Nightwatch has a critical function: to serve as an airborne command and communications post in dire situations<\/strong>, such as a nuclear war, which is why this model is popularly known as <strong>the \"Doomsday Plane\"<\/strong>.<\/p>\n<div class=\"foto_piedefoto\"><a href=\"https:\/\/live.staticflickr.com\/65535\/55064322041_27bce21671_o.jpg\" rel=\"noopener\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/live.staticflickr.com\/65535\/55064322041_2d97b505e1_c.jpg\" style=\"width:100%; height:auto; border:0px;\" \/><\/a><\/div>\n<div class=\"piedefoto\">The E-4B 40787 (74-0787, cn 206) in a photo taken at an undisclosed location on July 30, 2005 (Photo: <a href=\"https:\/\/www.dvidshub.net\/image\/9163198\/rumsfelds-flying-pentagon-supports-overseas-missions\" rel=\"noopener\" target=\"_blank\">Gerry J. Gilmore<\/a>).<\/div>\n<p><a href=\"https:\/\/www.outono.net\/elentir\/2022\/05\/10\/e-4b-nightwatch-this-is-the-inside-of-the-doomsday-plane-of-the-us-air-force\/\">In 2022, we saw this aircraft inside.<\/a> Remember that the USAF has four E-4Bs to transport the president and other US civilian and military leaders in case of war. <strong>These aircraft are slated to be replaced by the E-4C Survivable Airborne Operations Center (SAOC),<\/strong> a model based on the Boeing 747-8I. Of course, the E-4B wouldn't make sense if it couldn't stay airborne for long periods.<\/p>\n<div class=\"foto_piedefoto\"><a href=\"https:\/\/live.staticflickr.com\/65535\/55064504278_728547077a_o.jpg\" rel=\"noopener\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/live.staticflickr.com\/65535\/55064504278_fb2b3b48d2_c.jpg\" style=\"width:100%; height:auto; border:0px;\" \/><\/a><\/div>\n<div class=\"piedefoto\">An E-4B at Yokota Air Base, Japan, on October 28, 2025 (Photo: <a href=\"https:\/\/www.dvidshub.net\/image\/9379581\/secwar-transits-through-yokota-hub\" rel=\"noopener\" target=\"_blank\">U.S. Air Force<\/a>).<\/div>\n<p><strong>The E-4B has a range of 11,500 km, but that's not enough.<\/strong> To extend its flight time, <strong>the USAF has aerial refueling aircraft, including the veteran KC-135 Stratotanker<\/strong>, a model that first flew in 1956 and is based on the Boeing 367-80, the prototype that later gave rise to the famous Boeing 707 commercial airliner. The always interesting YouTube channel <a href=\"https:\/\/www.youtube.com\/@flybywire-aviation\" rel=\"noopener\" target=\"_blank\">Fly By Wire Aviation<\/a> (which I recommend you subscribe to) <strong>has published a video today showing and explaining this complex aerial refueling maneuver<\/strong> (the video is in Spanish; you can activate automatic English subtitles in the player's bottom bar):<\/p>\n<p><iframe loading=\"lazy\" title=\"Reabastecimiento en vuelo de un KC-135 a un E-4B\" width=\"665\" height=\"374\" src=\"https:\/\/www.youtube.com\/embed\/VZrS34t2kII?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Like the vast majority of USAF aircraft, <strong>the E-4B is only compatible with the in-flight refueling system known as the \"flying boom,\"<\/strong> developed by Boeing in the late 1940s. This system consists of <strong>a deployable boom on the tail of the tanker aircraft, which connects to a receptacle on the receiving aircraft<\/strong>. It is a complicated and dangerous operation, as both aircraft must be synchronized to fly at the same speed.<\/p>\n<div class=\"foto_piedefoto\"><a href=\"https:\/\/live.staticflickr.com\/65535\/55064504273_16e6523a6a_o.jpg\" rel=\"noopener\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/live.staticflickr.com\/65535\/55064504273_84218aeaee_c.jpg\" style=\"width:100%; height:auto; border:0px;\" \/><\/a><\/div>\n<div class=\"piedefoto\">The E-4B 31677 (73-1677, cn 204) during an in-flight refueling with the KC-135R 23512 (62-3512, c\/n 18495) of the 126th Air Refueling Squadron of the Wisconsin Air National Guard on May 15, 2024 (Photo: <a href=\"https:\/\/www.dvidshub.net\/image\/8420724\/126th-air-refueling-squadron-refuels-e-4b-nightwatch\" rel=\"noopener\" target=\"_blank\">U.S. Air Force<\/a>).<\/div>\n<p><strong>The flying boom is a system that allows for faster refueling than its alternative, the hose and drogue system<\/strong>, which is used by the U.S. Navy and Marine Corps, as well as other allied countries (including Spain). <strong>The flying boom system allows for the transfer of 1,200 gallons (4,542 liters) of fuel per minute<\/strong>, compared to 420 gallons (1,589 liters) per minute for the hose and drogue system.<\/p>\n<div class=\"foto_piedefoto\"><a href=\"https:\/\/live.staticflickr.com\/65535\/55063422717_185b1e7ed5_o.jpg\" rel=\"noopener\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/live.staticflickr.com\/65535\/55063422717_b99c32ccee_c.jpg\" style=\"width:100%; height:auto; border:0px;\" \/><\/a><\/div>\n<div class=\"piedefoto\">The boom of a KC-135 from the 100th Aerial Refueling Wing approaching the fuel receptacle of an E-4B in flight over the Atlantic Ocean on May 16, 2025 (Photo: <a href=\"https:\/\/www.dvidshub.net\/image\/9088691\/100th-arw-refuels-e-4b-nightwatch\" rel=\"noopener\" target=\"_blank\">U.S. Air Force<\/a>).<\/div>\n<p>According to its <a href=\"https:\/\/www.airandspaceforces.com\/app\/uploads\/2025\/06\/Almanac2025_fullissue_V6.pdf\" rel=\"noopener\" target=\"_blank\">2025 Almanac<\/a>, <strong>the USAF currently has a fleet of 504 tanker aircraft: 325 KC-135Rs, 51 KC-135Ts, 89 KC-46A Pegasus, and 39 HC-130J Combat King IIs<\/strong>, the latter equipped with the drogue system for refueling helicopters. <strong>These aircraft are of strategic importance to the United States<\/strong>, as they allow for the deployment of other U.S. aircraft anywhere in the world. Their role became evident in <a href=\"https:\/\/www.outono.net\/elentir\/2025\/06\/22\/the-usafs-distraction-to-send-its-b-2-spirit-bombers-to-iran-by-surprise\/\">the US attack on Iran on June 21, 2025<\/a>, allowing the B-2 Spirit bombers that carried out the operation to fly nonstop from the US to their target.<\/p>\n<p>---<\/p>\n<p><small>Main photo: U.S. Air Force. An E-4B during an in-flight refueling operation with a KC-135R of the 126th Air Refueling Squadron of the Wisconsin Air National Guard on May 15, 2024.<\/small><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Although the US Air Force is well known for its fighter jets and bombers, one of its most important aircraft is not even armed.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[11546,19534],"tags":[6757,6761,10431,14459,22790,26063],"class_list":["post-63126","post","type-post","status-publish","format-standard","hentry","category-military-aviation","category-defense-portada-eng","tag-boeing-kc-135-stratotanker","tag-united-states-air-force-usaf","tag-united-states","tag-boeing-e-4","tag-boeing-kc-46-pegasus","tag-lockheed-martin-hc-130j-combat-king-ii"],"publishpress_future_action":{"enabled":false,"date":"2026-07-14 23:31:55","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/posts\/63126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/comments?post=63126"}],"version-history":[{"count":0,"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/posts\/63126\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/media?parent=63126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/categories?post=63126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.outono.net\/elentir\/wp-json\/wp\/v2\/tags?post=63126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}