On ATL-ICN and then few days later ICN-PEK round trip. How are liquids in your carry on and checked luggage handled by security? I understand that there is still the 3 ounce max requirement. But, is it like flying in or out of a US airport or more like LHR where all liquids are to be removed from carry on luggage and placed into a separate clear plastic bag? Any other requirements regarding liquid going through security?

TIA for any advice