Users can track the status of an order, even when not logged in or as guest users.  To get to this feature, the user can click Track order in the upper right of the header.  This will bring up the Get Order Status page.  From here the user can enter an order number and the email address for the order.

If the Order Number and Email address correspond to a valid order, the user will see the order details. From this page, they can print the order details, or create a return.