The U.S. electricity grid includes more than 200,000 miles of high voltage (230 kilovolts and higher) power lines. This network of wires helps to maintain a reliable supply of electricity across the country. For those who wonder how these lines are inspected and repaired, check out this video of some high flying linemen - courtesy of the International Brotherhood of Electrical Workers Local 94 in New Jersey.

Photo Credit: Photo of transmission lines courtesy of the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability.