Got the card too so I emailed CS and asked what was up. Got a reply to sign up on their web site if interested in employment but with a highlighted note:

"It would be helpful if during the application process you would indicate you heard about us through the direct mailing piece."

$20K promissory note which you lose if you don't stay on at least a year.

COS resident, recent AF retiree (6/07). Appears they are looking for DEN area folks. Hope this helps.