A 50,000 gallon diesel fuel tank at a critical transformer substation south of Tucson near a border town that has been the center of immigration news lately was the target of an attack last week, but the make-shift bomb failed to cause a major explosion or power outage.
More than 30,000 Arizona residents could have been stripped of all access to power for their homes and businesses, for an unknown period of time, if the explosive device had knocked out their critical transformer substation.
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