As the article reports:
“Transportation is the Achilles’ heel of nuclear security and everyone knows that,” said Bruce Blair, a retired Air Force missile officer, Princeton University researcher and founder of Global Zero, a nonprofit group that seeks elimination of nuclear weapons.
The danger is not a traffic accident — even a fiery crash is not supposed to explode a warhead — but a heist.
“In an age of terrorism, you’re taking a big risk any time you decide to move nuclear material into the public space over long distances via ground transport,” Blair said. “Bad things happen.”