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The B-21 is slated to, by 2040, replace the U.S. Air Force's 45 B-1 strategic bombers, which date from the 1980s, and 19 B-2 strategic bombers, which date from the 1990s. The B-21 may also eventually replace the B-52, which originally dates from the 1950s and is slated to remain in service for many decades.
The Air Force plans to procure at least 100 [3] and potentially up to 200 of the LRS-B aircraft for an estimated $550 million each (2010 dollars). [4] [5] [6] A development contract was awarded to Northrop Grumman for its B-21 Raider in October 2015. Much about the project is highly classified and little information is available to the public.
B-21 (machine), a cypher machine invented by Boris Hagelin; Burroughs B21, a variant of the Burroughs B20 microcomputer; HLA-B21, an HLA - B serotype; Boron-21 (B-21 or 21 B), an isotope of boron; B21, a nuclear reactor at Dungeness nuclear power stations, Dungeness headland, southern Kent, England, UK
B-21 Raider Takes First Flight Video capture from video by Matt Hartman - Wikimedia Commons. At 6:51 a.m. on Friday, November 9, the U.S. Air Force's advanced new flying-wing B-21 Raider stealth ...
Although the great influence of these languages on the vocabulary and grammar of Modern English is widely acknowledged, most specialists in language contact do not consider English to be a true mixed language. [20] [21] English is classified as a Germanic language because it shares innovations with other Germanic languages including Dutch ...
Filipino actress Gloria Romero (pictured) dies at the age of 91.; A fire at a ski resort hotel in Kartalkaya, Turkey, leaves at least 78 people dead and 51 others injured.; A series of attacks by the National Liberation Army in the Catatumbo region of Colombia leaves more than 80 people dead.
The Rockwell B-1 Lancer [b] is a supersonic variable-sweep wing, heavy bomber used by the United States Air Force.It has been nicknamed the "Bone" (from "B-One"). [2] [3] As of 2024, it is one of the United States Air Force's three strategic bombers, along with the B-2 Spirit and the B-52 Stratofortress.
As of 2024, there are 57 sovereign states and 28 non-sovereign entities where English is an official language. Many administrative divisions have declared English an official language at the local or regional level. Most states where English is an official language are former territories of the British Empire.