Narita Airport Shuttle Bus
The Narita Airport Shuttle Bus provides bus transportation for travelers to and from Narita International Airport and Yokosuka Naval Base. The Bus office is located on the first floor of the PSD building (1555). Please note that you MUST provide a copy of your orders upon check-in at Yokosuka and Narita. Without a copy of your orders, you will be designated space available. Reservations may be made using the website above.
Source: Navy.mil Website