NEW : Passengers report being confined to seats on aircraft , more patdowns before boarding . ` ` We ask that passengers follow the instructions of international security and flight crews , '' TSA says . Comment: An official with the TSA told CNN that along with increased security at airports , screening likely will take longer . No changes in screening requirements , and no change in the number of carry-on bags allowed .
NEW : Passengers report being confined to seats on aircraft , more patdowns before boarding . ` ` We ask that passengers follow the instructions of international security and flight crews , '' TSA says . Comment: No changes in screening requirements , and no change in the number of carry-on bags allowed .