I doubt it. My personal gut instinct is that the planes coming from Alaska are going to Indiana specifically. I would suspect that Alaska has about one plane coming in from Shanghai once a day, and that plane is simply rerouted to Indiana for cost reasons. At Indiana, they can split the incoming cargo onto different planes, and add in other cargo from similar planes inbound from the east coast, Canada, Mexico, and so on, and then send out a dozen fully-loaded planes from there.
I would be practically willing to bet money that all the Shanghai->Anchorage planes were refueled, cleared through customs, and sent onward unchanged to Indiana. If that wasn't the case, then I would have my MacBook by now, as Seattle has a pretty sizable and capable facility for FedEx Express off Boeing Field.
