Boeing aircraft assemblies that arrive by sea at the Port of Everett are off-loaded onto a barge, then moved across the harbor to this dock, recently opened near the bottom of BNSF's five-percent-plus spur to the assembly plant at Paine Field. Once today's quota of containers are all on the railcars, 2081 and 2080, specially modified for this service, will shove the whole batch up the hill.