Google Maps can’t keep up with Shippensburg. In satellite photos of Exit 24, off Interstate 81 in central Pennsylvania, the 19th century brick and limestone house still stands on White Church Road, as do the silo, bank barn, pole barn, machine shed and the rest of the 102-acre farm. But the next time the satellite passes over, it’ll see what’s also there now: a 1.8-million-square-foot fulfillment center for Walmart Inc. where McKenna Borrell and 500 other people work. Next to the Walmart are fou...