. >> reporter: inspector ed walsh has spent 25 years with san francisco's health department. >> hi! health department, how are you? >> since 2007 our cameras have followed him on his beat. >> hello, ladies. >> inspecting the city's massage parlors. many of which are fronts for the business of prostitution. >> there is a guy, there is a guy there. when we go into these places, we observe sex. there's not supposed to be any sex. that's the bottom line. >> men looking for sex know that the price of admission is a quick $60 to the house. once inside, a bear can handpick a scantily clad woman from the bull pen and start a private party behind closed doors. >> you go into the room and then you negotiate a sex act with a masseuse. what i understand to be the going rate is anywhere from like $120 to $140 for a sex act. and usually you can get any type of sex act that you like. >> working as part of san francisco's human trafficking task force, health inspectors like walsh and dr. ojo have helped to shut down more than 80 elicit massage parlors since 2005. thanks in part to a new california

>> for ed walsh, the decision was a long sought victory and validation. >> are you ready?ah, this is it. this is great. they know it's going to happen. because they've been through the process. the final appeal to rehear the case, the board of appeals, they got denied. so they know that we're getting ready to close them. >> when the inspectors descend upon sunflower, they find the proprietor reluctant to answer the doorbell. >> unable to gain entry by way of the front door, inspector walsh goes around back. >> and as i approached the backdoor, the gentleman who was walking up the stairs here. >> how are you doing, man? >> good, how are you? >> are you coming out this way? would you open it, please? thank you. >> he had his shoes in his hands. he's barefooted, walking out of the premises. >> san francisco police, can you open the door, please? >> with walsh now inside, sunflower has no choice but to open up for inspection. >> is there anybody else here today besides you? no girls? no? >> i sold everything. i'm done. >> after a quick search of the premises -- >> you have imm

. >> lieutenant ed walsh will be laid to rest later today. the wake for michael kennedy will be held later today with the funeral taking place tomorrow. both men will be posthumously awarded the city's medal of honor. >> here's a question. does getting a mammogram guarantee saving your life? a brand new study questioning the accuracy and the rates ce o women who get them. it is not coming without controversy. >> a provocative new study in the journal of americof the ame medical journal say getting a mammogram especially in younger women like age 40 may not increase survival rates as much as it does in older women such as 60. >> there is a benefit to mammography screening but the benefit is modest and smaller for younger women than it is for older women than it is for women with risk factors. >> nancy keating is one of the researchers who came out with the findings. >> as we increase the number and frequency of mammography screenings they are having more false positives and the chief harm is over diagnosis. that's when you diagnose a breast ca

also, as mentioned by the mayor, it's also the firefighters michael kennedy and ed walsh recently, recently had to deal with when they responded, engine 33 responded, and they're grieving families knew every single time they responded to an alarm something like this could happen. yet we know there's not a single moment, not a single moment of hardship that america has not been transformed by. made stronger by. we know this with certainty. because it's the history of the journey of america. it's written not just in the brave men and women we've honored today in uniform, but it's anchored in the undaunting courage and uncommon resolve of ordinary americans. that's the incredible thing about america. we teach our children this in schools. that these are qualities engrained in our national character, stamped into our dna. they animate our national identity. and they continue to define who we are. last year's marathon, the whole world witnessed ordinary citizens, ordinary citizens doing extraordinary things. delivering blankettes and water. doctors running through the finish line. to the hospita

it's cocktail hour, and ed walsh from the city's human trafficking task force, is just getting startedht. >> we are conducting sections of massage salons in san francisco and what we are looking for is possible victims of human trafficking, women under 18 years of age and maybe forced to work in the massage parlors. >> walsh's target, the 51 remaining massage parlors licensed through the health department that city officials suspect employ trafficked women. >> people are being held against their will and being raped in essence, dozen plus times a day. it is a disgrace and very real. >> for the last five years, the mayor empowered city investigators to move in and raid massage parlors looking for evidence to shut them down. >> i have looked down stairs in the basement, i have seen where people are literally being held against their will. in essence, becoming sex slaves in a city like san francisco, one of the wealthiest cities in the united states. >> in 2004, san franciscans were shocked when a federal investigation targeting massage parlors uncovered an illegal sex trafficking ring in

a severe head injury and also mentioned by the mayor, with the firefighters, michael kennedy and ed walshn they responded to engine 33 responded and their grieving families, knew every time they responded to an alarm, something like this could happen. yet we know there's not a single moment, not a single moment of hardship that america has not been transformed by, made stronger by. we know this with certainty because it's the history of the journey of america. it's written not just in the brave men and women we've hon honored today in uniform but it's anchored in the undaunting courage and uncommon resolve of ordinary americans. that's the incredible thing about america. we teach our children this in schools, that these are qualities engrained in our national character, stamped into our dna. they animate our national identity and continue to define who we are. last year's marathon, the whole world witnessed ordinary citizens, ordinary citizens doing extraordinary things. delivering blankets and water and doctors running through the finish line to the hospital to care for the people who ha

and also, it is the firefighters, michael kennedy and ed walsh, had recently to deal with when they responded and their grieving families knew every single time they responded to an alarm, something like this could happen. yet we know there is not a single moment, not a single moment of hardship that america has not been transformed by, made stronger by. we know this for certainty because it is the history of the journey of america. it is written in the not just in the brave men and women we honored today in uniform, but anchored in the end on thing courage and uncommon resolve of ordinary americans. that is the incredible thing about america. we teach our children this in schools, that these are qualities ingrained in our national character, stamped into our dna. they animate our national identity and they continue to define who we are. and last year's marathon, the whole world witnessed ordinary citizens doing extraordinary things. shopkeepers delivering blankets and water, doctors running through the finish line, to the hospital to care for the people who had been wounded, residents and st

among those appearing our boston mayor martin walsh, massachusetts governor deval patrick, ed joe biden. live coverage starts at 12:45 eastern on c-span. at 8:00 eastern, journalists who won the pulitzer prize for their coverage of the boston bombings. a book called "boston strong." here is a portion of what you will see. >> they could either go to the marathon or they could go hiking, which is what they did often. they chose the marathon. when they were in this position at forum when the first bomb went off, bill richard knew it was a bomb. a lot of spectators and first responders found it could have been a few things. transformer fire, a cannon that was used as part of the a manhole fire. bill richard knew it was a bomb and he knew we had to get his family away as quickly as possible. will richard john to the barricade and got onto boylston street. he thought his family would be safer on the street. >> they were at the second bombing. they heard the first one and bill grabbed henry, the oldest boy. >> henry was directly in front of bill. tohe is pulling henry safety, he is reaching to