A vulnerable power grid is in the crosshairs of domestic extremist groups

Gunshots fired at two power substations in Moore County, North Carolina, late last year left 45,000 homes and businesses without power and more attacks just like that could already be planned by domestic extremist groups, according to experts.

​Gunshots fired at two power substations in Moore County, North Carolina, late last year left 45,000 homes and businesses without power and more attacks just like that could already be planned by domestic extremist groups, according to experts.