The contract runs through May 2019 with an option for the Air Force to extend its length until 2024, according to Reuters.
The indefinite-delivery/indefinite-quantity contract covers a range of enhancements, software maintenance and other support services, including scheduled maintenance of the bombers, the Pentagon said in its daily digest of major contract awards.
The B-2 has the capacity to carry up to 40,000 pounds of weapons, including conventional and nuclear weapons, precision-guided munitions, gravity bombs and a range of maritime weapons, according to AirForce-Technology.com. The bomber is the only stealth aircraft capable of carrying such weaponry.
The current fleet of B-2 Spirit Stealth Bombers from Northrop, which first started delivering the model to the Air Force in December 1993, consists of 20 aircraft.