Take the escalator up to level 3
Follow overhead sign to 'F' gates

Enter doorway to U.S. connection hall by Aisle G and pick up your baggage (have bag tag receipts ready for presentation prior to entering the U.S. Customs Hall)

Have all documentation in hand and ensure all applicable forms have been completed.
Proceed to U.S. Customs and Immigration, drop off checked baggage, and continue through Security to your departure gate.