(a) In this section, “national defense” includes homeland security.
(b) Personal property or real property is not subject to property tax if the federal government holds at least a 50% interest in the property, or the entity that owns the property, and the property:
(1) is situated on land that is owned by the federal government and located within the defined boundaries of a military installation; and
(2) is used for national defense purposes or for housing for military personnel and their families.