Subterranean terror: Can tech defeat hidden underground threats?
Subterranean terror: Can tech defeat hidden underground threats?
![](https://static.foxnews.com/foxnews.com/content/uploads/2018/11/BarrieTunnel2.jpg)
Nuclear weapon installations, cross-border smuggling tunnels, subway systems, cave networks ... just a few places that adversaries can pose an underground threat to security.
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