Not to do with RF, but there are old YT videos of HV linemen who literally hop out a helicopter onto an HV transmission line to manually inspect it. As the helicopter approaches, they hold out a long pole which is bonded to the aircraft's frame to bring it to the same potential as the line. It starts arcing quite a few feet out until the potential is neutralized and the lineman can "safely" step out onto the line and start working.

I imagine this inspection work is done with camera-equipped quadcopters nowadays.