There's a hidden wire stretched above American cities - and very few people know what it's actually for
Oct 16, 2015, 21:47 IST
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Unbeknownst to most, there are transparent wires that wrap around over 200 cities in North America to mark a religious boundary, including Manhattan. And every week, there is a "secret operation" to check and repair the wire in time for the weekend. We tagged along to see what it's all about.
Produced by Jenner Deal
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