>> i don't know the answer to that. >> we have not found any evidence of suicide vests yet. >> with the preplanning, any idea how long, weeks, months, the preplanning was on this? >> we don't know. i'm going to take one more question. >> video was there and does the video show any of these shooters clearly identified? >> we're still going through what type of video is available. back to the data exploitation, there is continued data exploitation that is going on as we speak. that will continue for some time. that is a pain staking process. that, as i have said in the past, we hope to get towards their intent with some of the data exploitation of the digital media. at this point i'm going to introduce special agent in charge john deangello.