US Air Force/Airman Jonah Fronk An airman salutes a B-1B Lancer that is being divested at Ellsworth Air Force Base in South Dakota, on February 17. The Air Force is divesting B-1B bombers, aiming to retire the fleet by the end of the 2030s. The bombers are considered “the workhorse of the Air Force today.” At least one of the outgoing bombers could find new life as a lab to help keep other B-1s flying. In February, the Air Force announced that it will begin retiring the B-1B Lancer from service by divesting 17 bombers from the fleet of 62.