The U.S. Air Force is investing $1.35 billion over the next five years to modernize the B-2 Spirit stealth bomber fleet with major digital upgrades that will enhance the aircraft’s communications, sensors, and avionics systems, according to budget documents released in April 2026.
The modernization effort reflects the Air Force’s commitment to keeping the B-2 operationally relevant as it transitions to the next-generation B-21 Raider. According to the Air Force Life Cycle Management Center (AFLCMC), the B-2 Spirit has received several updates to its platform within the Bombers Directorate, with upgrades happening continuously to ensure the fleet remains operational.
The sustainment and software upgrades occur in-house at a laboratory at Tinker Air Force Base in Oklahoma, and may include acquisition programs that modify either hardware or software. Amanda Sieler, B-2 Integrated Functional Capabilities Branch deputy program manager, stated that “we have anywhere from two-to-three upgrades in the queue, going on at any given time in various phases of coding, development, testing and fielding.” One program alone contains over 300 software changes to its sustainment software.
Communications and Survivability Enhancements
The B-2 Advanced Programs Branch is highly focused on modernizing the aircraft’s communications and survivability capabilities. The Advanced Communications team works on providing new communication capabilities to the aircraft, with the latest program providing an upgraded beyond-line-of-sight satellite communications capability that significantly improves the transfer time for real-time mission planning data.
In February 2026, Sierra Nevada Corporation completed the maiden flight of its Adaptable Communications Suite with the B-2, a major milestone in the fleet’s broader modernization effort. The solution incorporates a “secure, open mission system computing environment,” which allows smooth adoption of future military systems. According to Jon Piatt, executive vice president at SNC, this integration demonstrates the company’s commitment to advancing aerospace technology and supporting the Air Force’s strategic objectives.
The Survivability Integrated Program Team focuses on delivering capabilities that enhance the B-2’s low observable materials to improve its radar cross section signature, as well as improving the aircraft’s situational awareness in highly contested environments. The team equips hardware and software that provides warfighters with the latest battlefield picture, giving them the ability to adapt and be more effective and ready for the fight.
The Air Force introduced the “Spirit Realm” software factory in 2022 to enhance the operational capability of the B-2 Spirit bomber fleet. This facility uses integrated digital tools to design, manage, build, test, and field B-2 software more rapidly, allowing the aircraft to receive faster mission software updates and maintain technological superiority against emerging threats.
Lt. Col. Benjamin Elton, material leader of the B-2 Integrated Capabilities Branch, emphasized that “upgrading its avionics, sensors and communication systems are essential so that we stay ahead of emerging threats and enhance our payload and versatility.” The B-2 System Program Manager, Col. Francis Marino, added that the Air Force is “ensuring the aircraft’s systems sensors are functioning optimally to engage our targets effectively and accurately” while maintaining readiness by reducing downtime and increasing aircraft availability.
Sources
- Air & Space Forces Magazine — Investment of $1.35 billion over five years for B-2 modernization and extension through 2037
- Air Force Materiel Command (AFLCMC) — Details on B-2 digital upgrades, software changes, and Advanced Programs Branch focus on communications and survivability
- The Defense Post — Sierra Nevada Corporation’s Adaptable Communications Suite first flight milestone in February 2026
- Airforce Technology — Spirit Realm software factory creation and digital tool integration for B-2 upgrades
