> It showed a direct link between the West Chicago tower and another tower right by the Chicago Mercantile Exchange! It's pointing at the top of 10 South Canal

> It showed a direct link between the West Chicago tower and another tower right by the Chicago Mercantile Exchange! It's pointing at the top of 10 South Canal, one of downtown Chicago's main tombstones for data communications. The building has 3-6 foot concrete walls, no windows for the first 23 stories and was reportedly designed to withstand an overhead nuclear blast. The standing joke used to be that if Chicago were nuked you'd still get a phone bill because of that place. There's a lot of underground fiber in that area too. Including 24-count bundles mounted near the ceiling of the old underground tunnel delivery system -- the one that accidentally flooded during the 90's. They were installed by Metropolitan Cable back in the late eighties/early nineties during the "politically connected" fiber gold rush to replace dedicated copper with light. It would not be speculation to think there's fiber running directly from the MERC to 10 South Canal or that the MERC's location near 10 South is a coincidence. The line-of-sight out to Aurora is interesting too. There are high spots out there with tower clusters reminiscent of East Texas in the 1930's. I believe there are backup trading centers out there as well built after 9/11.