Originally Posted by
AJLondon
If needed, the check-in desk, will also explain the Shannon pre-clearance procedure to you. If you check bags, you cannot immediately re-clear security and US customs, but have to wait until the US CBP folk have had a chance to examine the bags (which you will apparently identify electronically at the immigartion desk). They will make an announcement for those with bags to go thru.
I can confirm this. All pax disembark at the same time. Those with bags wait in a seating area until the bags have been unloaded. You then proceed into the immigration area (very similar to a regular US one), clutching your bag tags and passport. Your bag tags are used to bring up the images of your bags, and you are asked to confirm these are your bags. rest of the procedure is as per normal for entering the US, but rather more relaxed and friendly