The Transportation Security Administration is increasing security measures at airports overseas over new terrorism fears.
Electronic devices like cell phones, DVD players, and laptop computers must be turned on and working properly at security or they may be kept off the plane.
Many overseas travelers say they're prepared to handle inconvenience.
"I'm not going to stop flying just because of things like this. Then terrorists win if you stop flying," one traveler said.
TSA is concerned that terrorists are working on a new generation of bombs that are hard to detect and designed to bring down airliners.
"Our job is to try to anticipate the next attack, not simply react to the last one," Secretary of Homeland Security Jeh Johnson said.
This latest directive comes because of growing fears that radicals from al Qaeda's Yemen branch may be looking to organize a terrorist attack. That same branch was responsible for the 2009 underwear bomber.
Officials also believe some foreign fighters in Syria are carrying passports offering easy access to the United States.
Meanwhile, with the Islamic State of Iraq and Syria (ISIS) declaring an Islamic caliphate in conquered territories of Syria and Iraq, critics say the White House has allowed a new terrorist state to form.
"This didn't have to happen. This is a failure of United States policy," Sen. John McCain, R-Ariz., told CBS's "Face the Nation." "And, by the way, there still is none that I can discern, either a policy or a strategy, to handle this situation."
"This guy (ISIS chief Abu Bakr) al-Baghdadi when he left Camp Bucca, a prison camp that we ran, he said, 'see you in New York.' We now have the largest and richest enclave of radical terrorism in history that not only encompasses Iraq, as we know, but Iraq and Syria," McCain charged.
Syria and Iraq have become training grounds for jihadists from America and the West.
The secretary of Homeland Security and the White House say they will continue to evaluate whether this increased security will be applied to U.S. domestic flights.