Originally Posted by kbins

Sure it does.

Option A: Pump outside the 'secure' area. Put expressed milk in cooler, check it as luggage. (Pray that luggage isn't lost.)

Option B: Wait to pump after clearing 'security' checkpoint, including in the Admiral's club/in the lav/while on the aircraft/in transit/changing planes. Continue to carry that expressed milk with you, on any plane or in the airport, til you exit the 'secure' area. Only if you have to exit the secure area or clear customs after arriving international, then you have to check the milk into your checked luggage before going back thru screening.