There's this team of people who do repair work on antenna towers. And the towers are often (such as the one on this clip) taller than the Sears Tower.
These repairmen are climbing up essentially with nothing to protect them from lightning, slippery steps, attacks of dizziness, nasty birds, etc.
In short, if they slip, that's it. And it's a long way down. But they're quite casual about the whole thing.
Notice that the main part of their work begins after this clip ends. The climb is the getting-to-work part.
As the commentary explains, this was shot from a camera mounted on the (hard) hat of a technician.
There's this team of people who do repair work on antenna towers. And the towers are often (such as the one on this clip) taller than the Sears Tower.
These repairmen are climbing up essentially with nothing to protect them from lightning, slippery steps, attacks of dizziness, nasty birds, etc.
In short, if they slip, that's it. And it's a long way down. But they're quite casual about the whole thing.
Notice that the main part of their work begins after this clip ends. The climb is the getting-to-work part.