Explosive devices are hidden inside ______ in these two packages. [originaltext]

"We will continue to pursue additional protective measures for as long as it takes to ensure the safety and security of our citizens. I have also directed that we spare no effort in investigating the origins of these suspicious packages and their connection to any additional terrorist plotting."
    The president’s talking about a suspected terrorist plan that spread from the Middle East to Europe and almost to the U.S. Officials got a tip and stopped it this past Friday. The president mentioned suspicious packages. There were two of those. One was found on a plane in the United Kingdom. The other, on a plane in Dubai. Each of the packages had an explosive device hidden inside a computer printer. Officials say those explosives were designed to be set off remotely; they could be triggered with a cell phone.
    Saudi Arabia warned the United States about the packages. The U.S. told Britain. And then U.S. and British officials told the Middle Eastern nation of Yemen. Authorities think these bombs came from an al Qae-da terrorist group inside Yemen. The packages were found on cargo planes, but officials think the bombs might also have flown on passenger planes. Both of them were inside packages that were headed to Chicago, Illinois; never made it there. Brian Todd looks at why someone might have wanted to send these explosives on a cargo plane.