In an age of email and instant messaging, there's one group that still needs letters and packages hand-delivered: sailors. The U.S. Postal Service is ready to serve them with a mobile post office.

Stacey Kelly, employee of the U.S. Postal Service, gets a bag ready to pick up the day's mail in the mobile post office van she operates from the Gas City parking lot at 6150 S. Kolb Road. The van ...