Sean Hannity is reporting from Israel, where he toured one of nine operational Iron Dome sites.

The systems, which are interconnected, are able to calculate the trajectory of an incoming rocket. If it will land in a civilian area, it’s intercepted. The process happens in a matter of seconds.

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IDF Lt. Libby Weiss, who is from Oregon, explained the Iron Dome system to Hannity. Learn more in the video above.