dr. katie nelson, veterinarian and we're on the on your side phone bank. we have ask the trainer going on tonight. we have dog trainer, all here taking your questions. 703-236-9220. we're here until 6:30 p.m. give us a call. michelle: in april, the f.b.i. and the department of homeland security issued report details threat to the power grid. one potential threat the use of electromagnetic device to shut off power to millions. jeff barnd looks at the possible risk. jeff: cell phones, computers, transportation and water systems connected to the nearly 500,000 miles of transmission lines traversing the u.s. if a foreign enemy injects e.m.p. in the u.s. power grid either by bomb or hacking the results would be cataclysmic. >> is it a problem? >> you bet it's a problem. i'm afraid it's a kill shot. >> there are three major sectors of the power grid. eastern, western, and the texas interconnections. the department of energy says 125 million u.s. households rely on the network da the grids with an e.m.p. it can release a seismic burst of energy. trying all the ci