An interesting look at a helicopter tree trimmer with a massive saw that is used to cut tree limbs that are growing to close to power lines. As I watched this my first thought was I hope that pilot never runs the saw into the power lines cause that would probably knock out a huge section of the electrical grid and be disastrous for the pilot. Despite the risk this appears to be an efficient way to keep the power lines from having outages due to overgrown vegetation.















