Since I just went through this process, I though I would record this to help us others on return to United States. As far as I know most or all international flights depart from Terminal 2. Go to 3rd floor after you have checked your bags.
- Security check - no removal of electronics from your bag, do present plastic bag of liquids of 3 oz (about 100 ml) or less to place in bin. Take off all coats, hats, and hoodies and place in bin. Thick-soled shoes or shoes that extend to ankle (hiking shoes) need removal. As usual, place all larger metal items in bin (belts with metal buckles). Place carry-ons and small personal item in bins.
- First US checkpoint just involves showing boarding pass to enter US Preclearance Area.
- Second US checkpoint is basically US Customs. There is a regular line and a line for those who have Global Entry. We have Global Entry so we just had to go to kiosk for camera facial recognition. This allows plane to fly into a domestic passenger, so it saves you time at your arrival point in the US.
I am posting this to help others. Please let me know if there are any corrections to make!