Passengers at some overseas airports that offer U.S.-bound flights will soon be required to power on their electronic devices in order to board their flights. The measure is intended to enhance aviation security at a time of increased threats.
The Transportation Security Administration says it is adding the requirement that passengers coming the the U.S. from some airports must turn on devices such as cellphones before boarding. It says devices that won't power up won't be allowed on planes and those travelers may have to undergo additional screening.
American intelligence officials have been concerned about new al-Qaida efforts to produce a bomb that would go undetected through airport security. There is no indication that such a bomb has been created or that there's a specific threat to the U.S.