Realignment of Onizuka Air Force Station was recommended and accepted as part of the 1995 round of the Base Realignment and Closure Program. In summary, the 750th Space Group was to be inactivated and its functions relocated to Falcon AFB, CO. Detachment 2 of the Space and Missile Systems Center would relocate to Falcon AFB (now Schriever AFB), CO and Kirtland AFB, NM, while some other undisclosed tenants would remain in the existing facilities for some time. On May 13, 2005, Defense Secretary Donald Rumsfeld recommended closing the Onizuka Air Force Station in Sunnyvale as part of a fifth round of military base closures and re-sizing. The date by which the realignment and closure must be completed was September 15, 2011.