michael boden was the forensic biologist in charge of the twa 800 capture. diving operations for the uss cole recovery. it was your team that brought in dr. boden. much evidence is retrievable if a flight goes down in the water. how much? >> well, a great deal of the evidence is retrievable on twa flight 800. we were able to collect not only the black boxes, but almost 97, 98% of the aircraft from twa flight 800 and bring it back to the investigators in order to determine the cause of that crash as well as the victims of that tragedy that we brought back to dr. boden to help him determine the cause of the crash that that was critical to the investigation. >> so our viewers know, the twa 800, people who had family members on board the flight, brought dental records to the coroner in the area at 3:00 in the morning he said call back tomorrow. they said this is now a criminal investigation. and if this is a criminal investigation, they're going to need somebody like you to help analyze the evidence should they find it. what clues could be gleaned. >> there's a

. >> bob boden. mr. chair, good morning, board, director riskin. my name is body boden, the san francisco riders union and i'm here to overwhelmingly support the transit improvement. having recently come from new york city, i feel like i now know what a transit city feels like. if anything i think all of these proposals need to go much further. if this is what we have at this point, i want you to fully approve them. i also want to commend the mta for the overwhelming amount of public outreach they have done. as an advocacy we couldn't go to all of them. there were so many of them. there has been an overwhelming amount of community input and they must have a lot of attention to sort through all of those comments and i appreciate them. i know there is a temptation to meddle through these proposals and maybe wind them down to particular concerns. the tep as a whole helps 99 percent of transit riders. there are 700,000 transit riders not in this room today. people at these meetings do have valid concerns. but your role is to work out not the hundred in

boden and we have to look that the as a package. this is a whole package and if we pick and peck at it and we try to solve every little problem we lose the large scale benefit of this. large scale efficiency require small scale tradeoffs. that's the simple reality of this. i'm very impressed to all that's been done to address the small scale tradeoffs, but i think the overall point is the one that director riskin made at the beginning. this is a monumental change. this is a real significant increase in efficiency, in all of those 5 seconds, 2 minutes and add up and it's not just director ramos 30 minutes, it's everyone's 30 minutes in what it increases, happiness, productivity. i second it with no changes. i think we should approve this with no changes. i do want to address one issue from the community and that is our fellow citizens from the inner sunset. i hope you stay around for a long time. i heard that comment. i don't think the speaker meant what he said, whether he meant it or not, i appreciate all the input you put in to a

. >> reporter: it's where boden knows the tags on sight. >> i've seen some of these tags have been putn down two and 300 times. >> reporter: he says it's a morning ritual to paint over the graffiti leaving walls thick with gray paint. >> it's the beginnings of a slum. you see a lot of tagging that is left and not cleaned up. >> reporter: san francisco's supervisor says graffiti cleanup costs the city $20 million a year and criminal prosecutions of taggers are difficult cases to prove. >> there has to be accountability when you break the law, there has to be consequences for it. >> reporter: reed think the city needs to hit taggers. she introduced legislation that would allow the city attorney to file civil sayaticitations. >> it would hold people accountable through restitution and community service hours. >> reporter: police plan to collect photos with the aim of repeat offenders. >> this would identify the worst prolific graffiti vandals and hold them accountable for collective acts. >> reporter: darnell worries fines may be too steep. >> to pay a big bill, that's going to be hard be

write articles that get great lay because they're in new york that happen to, you know, quote charles boden books or take an image from chuck and represent it as their own image. it's this odd to me. you know, one of the greatest gifts i probably ever got was working on the devil's highway and having to find a way into the u.s. border patrol. an unlikely partnership, i can promise you. and you know what has happened since that? one thing i realized is that in mexico -- and i'm sure my colleagues will agree to this -- you go into mexico, and people know as little about the milieu in the border lands as people in iowa city know, you know? i used to when i was feeling -- probably last year here, in fact, i was feeling a little spunky, and i said, you know, if we're born in mexico, we don't have an immigration gland that kicks off at 13 and pumps hormones to tell us how to get across the border. that doesn't happen. this is a learning process of necessity and complex issues x. so people in mexico don't have any idea. and it's been a great gift to me, and i'll pass it to the true scholars here j

police catch to texas teams of bearing a bodens burying a b. ♪ it harthesdayso find... ...food ma witonlyealt'the ly w knohow. chobi. h matrs. improving your health isn't always easy, but you can do it. stay active... get outdoors... eat healthy... and choose colgate total®. it does more than protect, it actually helps improve mouth health. [ male announcer ] it fights germs for 12 hours, in 24 hours starts to fortify enamel, and in 4 weeks helps improve gum health. you can do it with colgate total®. [ male announcer ] do more than protect. improve mouth health with colgate total®. and use the whole line for even better results. ♪ >> welcome back. we are not tracking any hot spots. it is still under 25 minutes down to the golden gate bridge. >> the time is 5:41 a.m.. a police officer asked to texas teenagers but there were doing in the woods. one of them answered the that were burying a body. police north east of dallas said that they were checking on a suspicious vehicle. they found that body of the 17 year-old classmate. police say that the 17 year-old was killed behind the school and his

know, when i came to stony brook, i was 17 years old, and one of my mentors there was a professor at bodenry, very encouraging to me in terms of being a professor. one of the professors who was there, these folks all gave encouragement. so i encourage my african-american students to really believe that they can be the best person in their field so that not only can they be somebody who thinks of a profession as a way to make a living, but really as a vocation and that they can make their mark. but since we talk about, we talk about active citizenship, we talk about social justice at tufts. i encourage them to whatever they want to get into, economics, health care, science, international relations, history, african-american studies that to think of themselves as somebody who's capable of being the absolute best at whatever it is they endeavor to do. >> host: what was your rick with manny mare bell? >> guest: manny was a deep mentor to me. he was somebody who inspired me. he taught at columbia university for a number of years. he authored about 20 books. i first encountered manny when i was