involving that to a might be connected national security investigation, there's a chance that, that ommunication would be intercepted. not the fact that the call was made but also the content. call t's what we incidental collection. >> that collection is then aggregated. ou have databases that store all of these things and so there re lots of u.s. persons who have had communications, conversations that are recorded out there in a database. can you search that database for communications involving specific u.s. persons without getting a warrant? >> yes. >> and the fact that these communications were intercepted any showing sarily of wrong doing on the part of the u.s. person, without that that showing u.s. person had anything to do the the foreign -- with national security investigation at issue, does that cause you that, that could involve almost a back door way of going fter communications by u.s. persons in which they have a reasonable expectation of privacy? >> it doesn't cause me concern but maybe because of the way -- see from where i am. i understand the question though. what matters is ho