I suspect what caused the confusion (CNN has now recanted) is the multiple definitions of the words "capture" and "catch" as it pertains to the technology in question. Those are the exact words that I use, interchangeably, no less, when talking about trying to take a good picture. Given the number of good, competent people currently working on this, we have no idea how directly the so called "sources" had gotten their information.
Also, I've seen Homeland Security consultants on each of the 24 hour news channels say several times that, essentially, "Risin is the most common false positive received from these initial tests. In fact, they get numerous false positives every day." (I'm trying to quote the guy on CNN, but it's probably more like paraphrasing, and it's essentially the same thing from each of the others.) It's terrible, if it's not a false positive, but far more likely is the possibility that it is, and, because someone slipped up and mentioned it to a Globe reporter.