. >> analyst tim goebel examined the shirt with an alternate light source.a and other biological materials will flores when hit with this light. >> there were a number of stains. and some of them were near the marks made by the examiner. >> not surprisingly the sustains were near the bite holes, an indication they were left by the person who bit the victim, presumably her killer. goebel removed the fabric and performed dna testing, which is a more advanced form of pcr testing. the result, the dna profile from the saliva on the tee shirt did not match roy brown. but whose was it? barry bench's daughter kathryn offered to help out. >> his daughter was a very courageous young woman who said i want the truth. she actually contacted us after our papers were filed in court and said if you ever need me, i'll give you a dna sample. >> the dna analysis confirmed what roy brown already knew, that the saliva stains had come from barry bench. >> the paternity testing showed that the john doe dna on the shirt came from the father of this young woman, kathryn, who is barr

if al qaeda is evolving from a centralized core group to decentralized goebel movement of multiple organizations, capable of attacking the u.s., would you say the threat has decreased or increased? has the threat diminished or increased and what is the impact on limitations that are proposed to be put on sections 215 and 702 likely to have on the future of the intelligence community with regard to collection? director? >> thank you. while the ideological center of the al qaeda movement i think still remains in the font to -- fatah, the locus for operational planning has disbursed. there are some five different franchises at least in 12 countries that this movement has morphed into and we see sort of chapters of it. yemen, somalia, and north africa, and syria, etc. many of these movements, while essentially locally focused him a probably the most prominent one that has an external focus on the root -- homeland remains a qap -- aqap which poses the most immediate threat to a potential attack on the homeland. the probability of attack now compared to 2001 at least for me is a very hard question to