Airport security rules are constantly changing!! To get the most updated and complete list of rules, we recommend the
TSA's website. You can also check with your specific airline.
Please refrain from packing valuable items in your checked baggage. Once you drop your baggage with your air carrier, both the carrier and security will handle and process the baggage in some manner.
DUE TO SEPTEMBER 11th :
Also remember that if you should decide to lock your checked baggage and security cannot open your baggage, the locks may then have to be broken. Security is not liable for damage caused to locked bags that must be opened for security purposes.