Air cargo still vulnerable to terrorists

The Transportation Security Administration is failing to ensure the security of boxed cargo in passenger planes, leaving the airplanes at risk for a terrorist attack, according to a government report obtained by USA TODAY. "Air cargo is vulnerable," says a report by the Homeland Security Department's inspector general.

The report, out today, cites repeated problems with the TSA's program to stop terrorists from sneaking a bomb into any of the tens of thousands of cargo packages carried each day in the bellies of passenger planes.

Investigators were able to slip into supposedly secure warehouses where cargo is stored before being loaded onto airplanes and walk around unchallenged, the report says. Inspector General Richard Skinner also found some workers who handle the cargo had not received required background checks or training.

The TSA "has not been effective" in making airlines and freight-handling companies comply with security rules for cargo, Skinner said in his report.