Call upon “the force” to guide you to the post office Tuesday but watch out for sandpeople and the Imperial Storm Troopers. Maybe you should take your wookie along for protection.

If you are a Star Wars movie fan you already know what’s next.

Crissy Finley, officer in charge, said the post office will unveil a special cancellation, cachet (envelope) and commemorative Star Wars stamps from 8 a.m. to 4 p.m. in fine style.

The cachet will feature a Star Wars picture in the left hand corner and will sell for $5. All you have to do is buy a stamp and a special booth will be set up in the lobby with the Star Wars cancellation.

A sheet of 15 self adhesive stamps may be purchased for $6.15 but supplies are limited. The stamps, designed by artist Drew Struzan, highlight images from all six movies. Characters depicted are Luke Skywalker, Han Solo and Chewbacca, Princess Leia Organa with R@-D2, C-3PO, Yoda, Queen Padm/ Amidala, Obi-Wan Kenobi, Anakin Skkywalker, Darth Vader, Emperor Palpatine, Darth Maul, Imperial Storm Troopers, Boba Fett, the Millennium Falcon, and an X-wing fighter.

If you are a Star Wars fan get ready to add to your collections.