ebook ∣ A Nation Protected
By Carla Mooney
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Have you ever wondered why you take off your shoes and scan your bags every time you get on an airplane? Airport security uses high-tech equipment to make sure no one is carrying weapons or explosives. These procedures were created by the Department of Homeland Security. Learn how the DHS helps during disaster, protects the country's computer systems, and keeps America safe. This highly engaging title displays the latest information through timelines, captions, and detailed text.