Could someone explain why a package being sent to me from Amazon.com via the USPS is going to Suitland MD this morning when it is already in Bethesda?

I ordered some books – opted for free shipping and just checked their status:

• Shipment Accepted; Destination Delivery Unit, May 02, 2007, 9:40 am, SUITLAND, MD
• Arrival at Unit, May 02, 2007, 9:17 am, BETHESDA, MD 20817
• Enroute, May 01, 2007, 1:30 pm, CAPITOL HEIGHTS, MD 20790
• Electronic Shipping Info Received, May 01, 2007

So, it left the Amazon.com warehouse yesterday, got to Capitol Heights yesterday afternoon, got to my post office this morning, and is on its way to Suitland, Maryland right now. Does this make sense?

[edited to add – the package arrived in today’s mail – perhaps it didn’t go to Suitland after all]