MDScott, I will give you a little different perspective...
Cat cards are the result of a 2006 Executive Order and also require readers at secure facilities and sub facilities. I am a Contract Background Investigator and although was aware of the order, just received mine. I spend all day on secure sites so it would be safe to assume they are a little behind. The program is now called USA Access and they have allot of sites that require a scheduled appointment online after receiving your email notification to schedule the appointment. Then you will go in and all of your Biometrics will be obtained. You will receive an additional notice to go and receive as well as activate your Cat Card. The facility I went to was run by the Department of Interior. Rest assured, the CAT Card will not eliminate the truck searches. I am credentialed and still get treated poorly at certain facilities.
Scott