To prohibit the closure or adverse realignment of facilities of the reserve components that the Secretary of Homeland Security determines have a significant role in homeland defense.

Directs the Secretary of Homeland Security to: (1) review the list of military installations recommended for closure or realignment by the Defense Base Closure and Realignment Commission in the report transmitted to Congress by the President; and (2) prepare a report to Congress specifying each armory, readiness center, and other facility used for the development, training, operation, or maintenance of the reserve components of the Armed Forces that, while identified for closure or adverse realignment on such list, has a significant role in homeland defense.

Prohibits the Secretary of Defense from closing or realigning any armory, readiness center, or other facility of the reserve components identified in such report as an armory, readiness center, or other facility of the reserve components that has a significant role in homeland defense.