How do you safely drop a 25-ton metal structure 40 stories ... smack bang right in the middle of a city? Not only must San Antonio's rusty 90-foot-tall TV antenna be precisely cut apart and come down, but the crew must also lift and assemble a crane built from the old antenna itself. Riley teams up with a bunch of high-altitude riggers to get a bird's-eye view of one of the most dangerous fixes he's ever been on.