instruction method, rather, that comes up from time-to-time in "inspire" magazine that is used and promoted by al-qaida to use and how to make a bomb. so that information is also an important part of this investigation. >> what about the suspects level of cooperation? there's been a lot of talk from a lot of different people about how he may have stopped giving investigators information once he was mir an diezed. is that accurate? is that true? >> well, sources are telling me that the investigators and one official used this term, were very thorough. that they got a lot of information from this young man before he was mirandaized and advised his rights. now, while he is not talking substantively, there is still communication. and, of course, over time, anderson, that can change.