A nub Rayjobs question

I think I've performed the requisite amount of reading of this site but haven't found an answer to the following:

Why are so many, if not all, of the Antarctica jobs listed under the Centennial CO location? As a matter of fact, when I searched for jobs with a location in Antarctica I got no hits at all. The job descriptions clearly state that they are at McMurdo, SP, and Palmer but they don't show up when searching by those locations.

I'm guessing that it's because the contracts are issued out of the RPS office in Centennial but it seems odd that the person or persons who set up Rayjobs would do so with such an obvious fault.

Is this my first introduction to the infamous way in which RPS works?