10 of the 9/11 hijackers boarded planes that crashed into the world trade center. our homeland security correspondent bob orr got an exclusive look at how this new screening technology works. >> reporter: the security surge begins here in boston. >> sir, go ahead and step on in. >> reporter: where the t.s.a. is rolling out its newest defense against a deadly terrorist weapon-- a carryon bomb. this full-body x-ray scanner, the first of 450 new machines being deployed across america, will start screening passengers monday for hard-to-detect explosives. >> female passenger, additional screening needed. >> reporter: in this demonstration, screener kelly mcclain spots a potential danger. so you don't really know what that is. you just know it's not supposed to be there. >> correct. so i have to have it checked by the person out there. >> reporter: security officers here, they never see that image. >> absolutely not. the only person who sees it is one individual back in the remote viewing area. they never see this individual, and the officers here never see that image. >> reporter: chief gale rossides says the images are not kept. >> these images cannot be stored. an officer cannot print off the image. so as soon as that analysis is made of that image, that image is destroyed. >> reporter: still, privacy advocates ridicule the scanner as an ineffective virtual strip search. >> this is kind of security theater. i mean, terrorists are going to be able to find place where's these are not in place. you're not going to be able to get them everywhere. >> reporter: he's right. there are 40 body scanners that use a different technology already in place at airports like miami. and this new wave of 450 will bring the total to 490 full-bode scanners, but there are around 2100 airport security lanes in america. to cover the gap, the t.s.a. will rely on a random selection process. when passengers arrive at a checkpoint like this, some will continue to go through the standard metal detectors, while others will be sent for the new, full-bode scans. there are also questions about effectiveness. the g.a.o. recently concluded it was unclear if the scanners would have detected the underaware bomb that umar farouk abdulmutallab smuggled aboard northwest airlines flight 253 on christmas day. and technology rushed to the security front has not always worked. the u.s. spent $36 million on 200 of these explosive-detecting puffer machines which ultimately proved unreliable. security officials say these scanners will work, but they know terrorists are already looking for vulnerabilities. >> they are very adaptive. they are very smart. they are studying what we do. >> reporter: now, one more point-- passengers can opt out of the full-body scans, but those who do will then be subjected to physical pat-downs. katie. >> couric: bob, you reported terrorists are constantly look for ways to beat the system. are there fears they'll figure out how to beat these new machines? >> reporter: well, very real fears. that's why we constantly have to change up security proatols. at airports across america passengers are having their hands randomly swabbed for explosives and the watch lists s are buying teatinned. even if he do everything right, there is no magic bullet. >> couric: bob orr at regan national airport. bob, thank you. meanwhile, it's an american success story. pp from one store in seattle, starbucks grew into the largest chain of coffee houses in the world. some will debate whether the coffee is too strong or the prices too high, but that's about as controversial as it got, until now. tonight, ben tracy tells us starbucks finds itself in the middle of debate over gun control. >> reporter: at a starbucks in cupertino, california, a group of guys had coffee in hand and handguns on their hips. >> that's my right. >> reporter: gun rights advocates are testing the limits of state laws allowing them to openly carry handguns. the coffee house showdown has gun control supporters steaming. >> i don't know if that guy is there to protect me or if he's there to shoot everybody in the store. >> reporter: starbucks has been forced to take a stand, though it could legally ban the guns, the company decided to allow them where local laws permit. it says if it banned guns, we would be forced to require our employees to ask law-abiding customers to leave our stores. they fear that could get dangerous. this isn't really about starbucks. it's about the larger gun control battle. in much of the country, it's simply getting easy tore carry a handgun. in the past two years, 24 states, mostly in the south and west, have passed 47 new laws loosening gun restrictions. it will soon be legal in both arizona and virginia to carry handed guns in bars and restaurants. in 10 see, guns are now allowed on sports fields and playgrounds. >> there are gun owners in this country that want to force guns into every nook and cranny of our society. they want to normalize the concept of guns being everywhere. >> reporter: the n.r.a. fearing new gun restrictions from the obama administration, has gone on the offensive, taking its fight right to the states. >> the issue is, you have the right to bear arms and a gun is like insurance. >> reporter: meanwhile, there's a fight under way to determine whether any city or state can even continue banning handguns. the u.s. supreme court is expected to decide that this summer. ben tracy, cbs news, los angeles. >> couric: now to the president's final push to get health care reform through congress. the next step is for congress to write what's called a reconciliation bill which will need only simple majorities in each chamber to pass. that's 51 votes in the senate and 217 in the house. and congressional correspondent nancy cordes tells us, there's a mad scramble for votes in the house. >> reporter: nearly a dozen democrats who voted for the house health care bill told cbs news today they're on the fence about the president's final pl plan. mart stupack of michigan is going further. >> we're not going to vote for it until we see it. >> reporter: stupack warnhe and at least 12 others will switch their votes from yes to no if the white house doesn't find a way to reassert the antiabortion provisions they favor. even if it's close? even if that could sink the bill? >> even if it's close. >> reporter: chances are it will be close. the original house bill passed in november by only five votes, 220-215. so house leaders are busy twisting arms. today, the president summoned 17 democrats to white house for a chat. >> the president wants to meet. i'm always available. >> reporter: ohio's dennis kucinich voted no the first time around because like many liberals, he felt the public option wasn't strong enough. the president's plan drops it altogether. is there anyone, even the president of the united states, who could convince you to change your vote on health care? >> well, you know, my position is pretty well established. >> reporter: luckily for the president, there are at least 10 democrats who voted no last time but have signaled they might come around. pennsylvania's jason altmire is one of them. >> some of the things was concerned about have certainly been resolved. i'd like to see what the cost-containment language is. deficit reduction is critically important. >> reporter: he and many other democrats believe if the vote were held tonight, house speaker nancy pelosi would not have the 217 votes she needs. speaker pelosi predicted today that once all those undecided democrats will get a chance to read the final bill within the next week or so, they will come around. katie. >> couric: nancy cordes reporting tonight from capitol hill. nancy, thank you. now, to international news. voting began today in iraq's parliamentary elections, and as it did three separate bomb attacks in baghdad killed 17 people. insurgents have vowed to sabotage the election. their targets today were soldiers and police officers who were voting early since they were scheduled to be on duty sunday when moist of the votes will be cast. in chile, five days after the earthquake there, the country's outgoing president said today it could take four years and billions of dollars in loans to rebuild. the death toll stands at more than 800. among the survivors is the dezarm family. they're from haiti, where their home was destroyed by the january earthquake. they survived and days later a family member arranged for them to relocate to chile, where they've now cheated death a second time. chile's earthquake, you'll recall, set off tsunami alerts across the pacific, but when bad weather caused giant waves to saloom into a cruise ship in the mediterranean yesterday, there was no warning at all. today, mark phillips shows us video from inside that ship as a spect teleon the-- spectacle on the high seas turned deadly. >> reporter: the weather was horrible, the wind gusting to 60 miles per hour, and the seas rough, but nothing a modern cruise ship shouldn't be able to handle. passengers not prone to sea sickness were having a meal or had gathered in a lounge at the front of the ship to watch the show. bad idea. a freak wave perhaps 30 feet high crashed through the windows and swept shin-deep across the deck. two people were killed, one by a shard of glass, survivors said. crew members scurried across the flooded deck to help those caught by the killer wave. the "louis majesty" was bound from cartagena, spain, toward genoa, spain, when she was caught in a rising sea off the spanish coast. the 680-foot-long ship with 1930 passengers and crew on board was turned to face the oncoming waves, the safest position to avoid being capsized, but a large train of monster waves, passengers say three of them, rose up and slammed over the bows. even a modern vessel-- this one is 18 years ode-- can't shrug off that much angry water. the surviving passengers and ship were brought to barcelona. >> people were running everywhere, panic, actually. >> reporter: the "louis majesty" is being repaired, the rest of the cruise, canceled. >> couric: and coming up next here on the cbs evening news, an allegedly serial killer. could police and prosecutors have stopped him? 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a cbs news investigation has uncovered exclusive new details revealing critical mistakes by police and prosecutors working the case, how they could have stopped the serial killer if they hadn't ignored charges of rape. county judge tim mcginty has been on the bench for 18 years and says he can no longer keep silent. >> there's something wrong with this picture. this would not have happened anywhere else. >> reporter: in fact, cleveland has more reported rapes per capita than any major city in the nation, 633 in 2008. but no one was charged in more than two-thirds of those cases. do you feel the police should have known? >> they-- do i think they should have known? they did know. >> reporter: just look at his record. twice arrested for rain in 1989 and 1990. and then served 15 years in prison. forced to register as a sex ofter upon his release in 2005. all of which, evidently, meant nothing on the night of december 8, 2008. it was right here that night that a woman named gladys wade say sowell punched her, chocked her, and tried to rape her. sowell was quickly arrested and the case turned over to a sex crime unit, a missinged opportunity that some say ended up costing six other womens their lives. the detective report from that case shows police believed a convicted rapist and not the alleged victims. the the detective wrote: there were no visible signs the woman was punched, detectives and prosecutors stating there was insufficient evidence to prosecute. while the domestic notes visiting crime scene, there is no mention of the smell neighbors had complained about for years, no note of sowell's history, despite police claims his record was checked. the conclusion-- the woman's claims, including attempted rape were unfounded, unfounded, unfounded. sowell was set free. >> i'm not ready at this point. >> reporter: martin flask overseas the cleveland police department. they took the word of a convicted rapist over the alleged victim? >> all i can say is i know the investigator did a good job, took statements, investigated the incident, presented the facts to the prosecutor and made a determination no criminal charges would flow from that incident. >> reporter: that incident occurred in december of 2008. nine months later another woman accused sowell of rape, and yet police didn't even visit the crime scene for more than a month. it was only then that the death house on imperial avenue was discovered. still, cleveland police chief michael mcgrant had nothing but praise for hir department. >> we were very vigilant in what we did. >> reporter: 11 people are found dead in one building and kept as trophies corroding and they did good police work? something is wrong here. >> reporter: what's wrong according to judge mcginty is the low priority given to rape cases. mcginty and some police officers said cleveland follows a long-known practice called routine release where they are released instead of indicting them. >> they don't have enough time. they don't have the will power and they don't have the numbers. they have to dump cases because there's nothing else they can do. >> reporter: so we're going to give you a free pass. >> it's like trout fishing where you catch and release, except these are criminals we're releasing. >> reporter: as it stands right now, you're finding no fault with anybody in the cleveland police department regarding anthony sowell and the direct investigation? >> i don't find any direct fault yet. >> reporter: cleveland mayor frank jackson recently appoint a commission to review his city's sex crime investigation, but to date, nobody in the cleveland criminal justice system has been held accountable for the failure to catch and hold a serial rapist turned killer, for the unimaginable loss of 11 lives in a single house of horror. armen keteyian, cbs news, cleveland. on the first week. 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(announcer) talk to your doctor to find out if prescription chantix is right for you. ♪ (announcer) right now, all over the country, discover card customers are getting five percent cashback bonus at grocery stores. it pays to get more, it pays to discover. >> couric: we have an update now on the story of that air traffic controller who let his nine-year-old son direct planes at j.f.k. airport here in new york. a new tape surfaced today of his twin sister doing the very same thing the following day. >> couric: the controller, glenn duffy, and his supervisor, have been suspended and could lose their jobs. transportation secretary ray lahood today called their actions "a stunning example of a lack of professionalism." now, to an age-old question-- what killed the dinosaurs? 41 of the world's top researchers reported today a giant asteroid is to blame. it was nine miles wide and slammed into mexico with the force of a billion times more powerful than the atomic bomb that hit hiroshima. the asteroid kicked up a dust cloud that shrouded earth in darkness, wiping out most of its species. and coming up next, giving back to a teacher who gave them so much. certain other medicine should talk to their doctor because serious stomach problems, such as bleeding may worsen. mom's diagnosis was hard to hear, but there's something i can do. 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(general) remember omnaris! ask your doctor. in the battle against nasal allergy symptoms, omnaris combats the cause. >> couric: most of us remember a teacher who inspired us. for me it's my high school government teacher max smith. but for many students from garfield high school in los angeles, it's jaime escalante. he was celebrated in a hollywood movie. now, john blackstone tells us his former students and famous friends are trying to stand and deliver for him. >> reporter: they are old friend who changed each other's lives and the lives of many more. actor edward james olmos and teacher jaime escalante. now 79. >> don't let the word "calculus" intimidate you. >> reporter: in the 1980s, escalante was striving to turn inner-city kids in los angeles into top-achieving math students, olmos played esk lawnta in the 1988 movie "stand and deliver." and the world learned of the inspirational teacher and the unlikely student who excelled in the nation's toughest college entrance math exam. >> kimo, i checked my work twice. >> reporter: hesk lanta's students used his nickname. >> kimo. >> kimo one, kimo two right here for you. >> reporter: it's his triumphs at garfield high is something olmos hopes people will remember now. >> we made it. >> we did make it. >> reporter: because jaime escalante is dying. he has bladder cancer. a few months to live, at most. his voice is weak. but his pride remains strong and the kid he helped lift out of poverty by preparing them for college. >> we built it, the program, gradually. >> reporter: among his graduates is erika camacho. before she took his algebra class, her only goal was to be a cashier. now at 34, he's a ph.d. and math professor at arizona state university. >> you owe him to do good because he put so much of himself tow make sure that you succeed. that it's only fair to give back what he has given to you. >> reporter: his illness and medical treatments have drained his resources. have you heard from some of your former students? those he helped are now helping him, so far raising $19,000 for his care. he's not gig up. >> you don't count how many times you are on the floor. you count how many times you get up. >> reporter: ever the teacher, jaime escalante is still giving lessons in determination. john blackstone, cbs news, reinoh, nevada. >> couric: and that is the cbs evening news. for tonight. i'm katie couric. thkdz for watching. i'll see you tomorrow. for the latest news online you can go to cbsnews.com. sarah palin's oscar surprise. this is "entertainment tonight." sarah's oscar outing with willow. and a clean-shaven clooney and what tina just told about co-hosts alec and steve. sandra's acceptance speech. mo'nique's open marriage. plus, our major vani"vanity fair" party announcement. bill clinton hitting on the first lady? >> man, michelle has got some legs on her. >> will, chevy, dana and jim karrie as ronald