Watch these guys remove the antenna atop the John Hancock Center

These guys are working on the top cap west antenna of the John Hancock Center—a 1,127-foot-high (344 meters) building located in Chicago. I know they are wearing the mandatory security equipment and it's very unlikely that they could fall, but watching them do their job makes my stomach clench. » 8/12/14 7:30pm 8/12/14 7:30pm