Your country needs you. We have reason to believe that an assault is planned on RAAF Pearce and a weapons cache has been placed in the vicinity to support the attack. Late last night an enemy spy was captured, on him was found the following cipher:
abcfj lhujh wvcml xlbvv najwl batub tpcmp sazuu elnly fltlv rbhuv juufl rwbne opokl aactu fzjda emwil hyfkz zmatv olqup nbnnn iafon hbbne
Also found on him was a photo, you can view it in the gallery of this briefing. The sign can be found on many of the approaches to the base, we think you need to use the information to break the code. Find the weapons before the enemy attacks. Good luck!
Hack the enemy database to check your solution.

For gallantry in action in hazardous circumstances in the chase for the FTF, R0gue is awarded the Australian Geocaching Medal for Gallantry

For meritorious achievement and dedication to duty in the breaking of the enemy's cipher, sno seeker is awarded the Australian Geocaching Conspicuous Service Medal