The Tennessee Valley Authority is taking to the skies to inspect its high voltage transmission lines.
Crews are using helicopters to inspect the lines and equipment, to look for any potential problems that could lead to power outages.
The inspections are conducted system wide at different times. In Knoxville, they're done about every six months.
"They fly slow so they can look. And they can also come back if they see issues. They report it back, we'll make a decision whether it's urgent or it can wait until the next maintenance window," said Tracy Flippo, TVA's Vice President of Transmissions Operations.
TVA made adjustments to its inspection procedures and vegetation guidelines after the major power blackout in the northeast 10 years ago this week.