In 1992, the Kirtland Underground Munitions Maintenance and Storage Complex (KUMMSC) was activated at Kirtland AFB. The facility provides storage, shipping and maintenance for the United States Air Force. It is operated by the 898th Munitions Squadron (898 MUNS) and the 377th Weapons Systems Security Squadron (377 WSSS). The facility is state of the art, with more than located entirely underground. KUMMSC is the largest storage facility for nuclear weapons in the world. Total number of deliverable nuclear warheads stored there is over 3,000. The majority of the munitions include the B83 and B61 gravity bombs, and W80, W78, and W87 warheads for the Air Launched Cruise Missile (ALCM), Minuteman III and Peacekeeper ICBMs.