Security Gaps Plague Cargo Shipping

A test conducted by CBS News in 2006 showed that five out of six packages were not visibly opened or inspected.

On any given day about 37,500 tons of packages are shipped on cargo planes in this country, reports CBS News chief investigative correspondent Armen Keteyian. In addition, another 12,500 tons of cargo are sent on passenger planes.

Read the full report.