# US Air Force B-21 Raider deployment preparations > Live situation record from CLSTR: https://clstr.news/situations/us-air-force-b-21-raider-deployment-preparations > Updated: 2026-09-19T14:01:00.000Z. Sources: 4. Developments: 2. The United States Air Force is preparing for the deployment of the B-21 Raider, a sixth-generation stealth bomber designed for both conventional and nuclear missions. Initial efforts focused on a security overhaul at Ellsworth Air Force Base, involving advanced anti-drone protocols, thermal imaging, and upgraded training for the 28th Security Forces Squadron to protect the secretive aircraft. To facilitate the transition to the B-21, the Air Force is extending the operational lifespans of its B-2 Spirit and B-1B Lancer fleets. Through the North Star Readiness Campaign, the military is increasing the mission readiness of B-1B and B-52 aircraft via enhanced maintenance. Additionally, testing has accelerated with the incorporation of a second test aircraft at Edwards Air Force Base to evaluate mission systems and software. The Air Force aims to acquire at least 100 B-21 units, with the first expected at Ellsworth Air Force Base by 2027. ## Timeline ### 2026-09-19: US Air Force extends B-2 and B-1B lifespans ahead of B-21 Raider rollout The US Air Force is extending the service life of B-2 and B-1B bombers to bridge the gap until the B-21 Raider is fully deployed, utilizing integrated testing and the North Star Readiness Campaign. 3 sources. https://clstr.news/cluster/us-air-force-extends-b-2-and-b-1b-lifespans-ahead-of-b-21-raider-rollout ### 2026-08-30: Ellsworth Air Force Base upgrades security for B-21 Raider deployment The US Air Force is upgrading security at Ellsworth Air Force Base and enhancing B-21 Raider capabilities to penetrate advanced air defense systems and ensure nuclear deterrence. 2 sources. https://clstr.news/cluster/ellsworth-air-force-base-upgrades-security-for-b-21-raider-deployment --- Cite as: US Air Force B-21 Raider deployment preparations. CLSTR, https://clstr.news/situations/us-air-force-b-21-raider-deployment-preparations