Important information for US-departures: One carry-on item only

Under TSA (Transportation Security Administration) requirements,
passengers departing from the US may take only one piece of
carry-on baggage and one personal item through security –regardless
of travel class or frequent flyer status. Any additional carry-on
baggage must be checked in before the TSA security checkpoint.
This also applies to connecting flights after arrival in the US. The applicable
rules of the operating airline apply.