Transcript for TSA Takes a Closer Look at Electronics From Abroad
We'll watch it. Turn now to the terrorist threats and tighter security at airports. The tsa targeting us-bound flights from overseas, looking at electronic devices so they can't be used as bombs. Good morning, David. Reporter: This is part of the new concern about the attack on the homeland from jihadists in Syria and elsewhere. American officials are asking, the new level of security, anybody flying into the U.S. May be asked to turn on a device. If it doesn't power up, it doesn't fly. Make sure electronic devices carried on board can power up. The fighting in Syria and Iraq has alarmed American officials. Both countries have become a training ground for jihadists, some from America and the west with a passport, which could allow easy access to flights. Tsa is asking some of the 250 international airports to ask some passengers to power up tablets, cell phones, computers. If it doesn't power up, it won't go on the plane. Why? The worry is bomb makers could be hiding explosives in the components. It takes very little explosives to penetrate the hull of an aircraft and cause catastrophic damage. Reporter: Just last week, U.S. Officials sounded the alarm that bomb make frergs Yemen may have traveled to Syria to link up with bomb makers. And they attempted to turn printer cartridges into bombs. Some overseas travelers say they can handle the inconvenience. I'm not going to stop flying because of things like this, no. Terrorists win if you stop flying. Reporter: This is a big concern for U.S. Officials. And the westerners with passport, jihadists, could be their best bet.
This transcript has been automatically generated and may not be 100% accurate.