airlines & airports - US security measures
Advanced Passenger Information: See APIS (Advance Passenger Information)
Baggage Checks: The US authorities screen all checked bags. In some instances this includes opening luggage after it has been checked in. Although we do not recommend leaving bags unlocked, you should consider using plastic cable or zip ties as an alternative to locks or padlocks. If a checked bag is searched, a statement to that effect will be inserted in the bag to notify the owner.