visionaries such as addison and tesla argue the merits of direct current versus alternating current, the means by which electricity is delivered is a controversial topic. we depend on our high-voltage network to power everything from our iphones to our economy. uninterruptedy of electricity is possible to ensure health and safety and quality of life we have come to expect. parts of our country, our transmission infrastructure, roads andation's bridges is aging, congested, and in need of repair and replacement. we cannot avoid the vital role