He'll never admit to it afterwards, but the harmonizer is Jan ten Boom. Who has nothing at all to do with Australia, but does have a decent ear for music, and who is not really good at sitting in the dark unless he's waiting for someone to walk past him so he can set off an explosive charge at exactly the right moment. (Jan's good at making infrastructure not be there any more.)

Gordon just sits back and waits. He's pretty sure the Indonesian police women are praying, but you don't interfere at a time like that.