I REALLY Don't Understand

I have been tracking a package since last week. Here is where the package has been since it was shipped (this is the correct order):

LONDONDERRY, NH (where it was shipped from)
NORTHBOROUGH, MA
BROOKLYN PARK, MN
SACRAMENTO, CA
NEW BERLIN, WI (this is where it is as of 7 December)

Now, my question is, WHY? What logic has you send a package from the east coast to the west coast and back to the Midwest, where its final destination is (Michigan)? Can anyone explain this to me? I find the entire thing completely confusing and totally lacking in any sort of logic. I really would appreciate an explanation, if anyone has one! Thank you very much.