Dateline: San Francisco. The trip is over, we survived another amazing adventure. Herewith some valedictory thoughts. We had been security screened in Bangkok, we flew into Narita, the airport for Tokyo and our baggage was checked through to SFO. We never encountered anyone or anything unscreened from outside the security envelope, never left the secure area at Narita, but still had to go through two separate security checks in Japan. Does this make any sense? We've encountered this process elsewhere, Frankfurt and Chicago come to mind.
I understand screening everyone and everything entering the secure envelope, but why do we need to be rescreened if we've never left the envelope? Cannot the security people comprehend that the envelope extends back to the first gate at which we entered the system? Oh, well....