The US House of Representatives passed an updated version of the $768 billion defense spending bill for 2022 earlier in the week.
The prohibition will last until September 2023, with the exception for units that have started fielding the new bomber. Meanwhile, US defense company Northrop Grumman has already manufactured five B-21s, which will be commissioned in the mid-2020s.
According to the news outlet, 17 oldest Lancers have been retired due to their poor condition to allow more focused maintenance for the remaining 45 bombers.
The B-1B Lancer is a supersonic strategic bomber, considered to be the backbone of the US long-range bomber force, capable of rapidly delivering large quantities of precision-guided and other weapons against any adversary anywhere in the world and at any time.