(j) The Legislature finds and declares that the closure of two or more military facilities or installations within the County of San Bernardino will cause serious economic hardship in that county, including loss of jobs, increased unemployment, deterioration of properties and land utilization and undue disruption of the lives and activities of the people. Therefore, the Legislature finds and declares that to avoid serious economic hardship and accompanying blight, it is necessary to enact this act which shall apply only within the County of San Bernardino. In enacting this act, it is the policy of the Legislature to assist communities within the County of San Bernardino in their attempt to preserve the military facilities and installations for their continued use as airports and aviation-related purposes. It is the intent of the Legislature and the commitment of the local authorities to ensure that the existing airfields at both Norton Air Force Base and George Air Force Base are protected, developed, and enhanced as civil aviation public use airports. Therefore, the joint powers authorities authorized by this section should make every reasonable effort to guarantee that these vital airport facilities are retained for general aviation use now and into the future.