In an NBC Dateline interview, one of the 911 operators who took the call from the social worker outside Josh Powell's house, breaks his silence. In an exclusive interview with NBC's Keith Morrison, David Lovrak, who's been taking heat for his questions when Elizabeth Griffin-Hall called him, says he, like so many others in this case, didn't recognize the kind of man they were dealing with. "Especially for somebody who has done this for as long as I have, to relisten to the call and hear how clumsy and faltering I sounded," Lovrak said, "It was horrible. This has been...