By Kim Krisberg
Wally Reardon stopped climbing towers for a living back in 2002 due to an injury. He had spent years putting up communication antennas anywhere employers wanted them — smokestacks, buildings, grain silos, water tanks. Just about anything that rose up into the sky, Reardon would find a way to scale it. It was exhilarating.
"I can't explain that freedom that we felt," Reardon told me. "I just liked the adventure of climbing towers. I just totally loved it. It was a crazy lifestyle and we were like a bunch of nomads. We lived by our own rules."
It was also dangerous. In fact,…