As the U.S. races to secure itself against future terrorist attacks, airport security has come under intense scrutiny. Unfortunately, far less attention has been paid to the 18.5 mil-lion containers that arrive in the U.S. every year by truck, railcar, and sea. Packed with more than $1.1 trillion worth of imported goods, these con-tainers constitute a vital economic life-line-and the most vulnerable link in our transportation infrastructure.
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