Having a test event in rio for the diving competition. Thanks. The cbs ornight news will be right back. E is chrisisoth and i will listen. From maine to maui, thousands of High School Students across the country are getting in on the action by volunteeringin their communities. Chris young action teams of High School Students ararjoining volunteers of america and Major League Baseball players to help train and inspire the next generation of volunteers. Carlos pea its easy to start an action team at your school so you, too, can get in on the action. If you were a hippie in the 60s, you need to know. Its the dawning of the age of aquarius. Yeah, and Something Else thats cool. What . Osteoporosis is preventable. All osteos preventable . Right on if you dig your bos, protect them. Ininregon today, a sixwwk standoff between the fbi and armed antigovernment protesters ended peacefully. The final four holdouts surrendered. One refused to go quietly, though, ranting, liberty or death. Tonight weave learned that the isis terrorist group in syria and iraq has chemical weapons in its arsenal. In a rare inteteiew for 60 minutes we spoke to the director of the cia, john brennan. We have a number of incidents where isil has used chemical munitions on the battlefield. Artillery shells. Yeah, sure. Isis has access to chemical artillery shells . Has access to chemicic precursors and munitions that they can use. The cia believes that isis has the ability to manufacture small quantities of chlorine and mustard gas. And the capability of exporting those chemicals to the west . I think theres always the potential for that. Th is why its so important to cut off the various transporortion routes and smuggling routes they have used. Are there American Assets on the ground right now hunting this down . The u. S. Intelligence is actively involved in being a part of the effort to destroy isil and to get as much insight into what they have on the ground inside of syria and iraq. Well have our full interview with cia director brennan, including the threat that he says keeps him u uat night. Thats this sunday on 60 minutes. Millions have fled syria, but there are tens of thousands who cant get out. Theyre trapapd between russian bombers and a closed turkish Holly Williams is following this. Reporter imagine the terror. Never knowing where and when the warplanes will hit next. We cant independently verify these videos, but they appear to show the aftermath of air strikes on the town of tel rifaat this week. In the syrian regimes new offensive, which is backed by ruruian air power, civilians are once again paying with their blood. Crossing the border into turkey, we met abdul kahrim bahloul, who runs a school in tel rifaat. The shelling and air strikes are random, he told us. Homes are destroyed and childrens bodielie in shreds on the ground. He told us he came to ask the turkish authorities to give refuge to children from the but after absorbing more than 2 million syrians, turkey is reluctant to let any more in. Syrian Regime Forces have now nearly encircled the city of aleppo. The u. N. Fears that 300,000 civilians could be cut off as they were in the town of madaya, during a siege by the regime. More than 40 starved to death. Dalia al awqati that her charity, mercy corps, feeds and clothes half a Million People in Northern Syria each month. Its not much. No, but its essentials to keem a family alive. Reporter now theyre racing to get food parcels to families in aleppo city, fearing more starvation in a country thats already exhausted by a senseless war. And as if syrias war isnt complicated enough, today some they were attacked by kurdish fighters, who were also supported by the u. S. Now, the kurdish fighters say it wasnt deliberate, but, scott, this shows just how difficult it is for the u. S. To unite different faxes factions on the ground in syria. Holly williams, thanks. So, what can the u. S. Do to stop the war . For that we turn to margaret brennan. Margaret . Reporter well, today, e u. S. Is trying to broker an immediate ceasefire. Secretary kerry pushed russia and iran to stop attackingng civilians in aleppo and let in aid to besieged areas. Vladimir putins military has cut off supply lines to the u. S. Backed rebels, and u. S. Officials warn that thth strengthens both isis and assad and it leaves the u. S. With little leverage in a war president obama has resisted getting involved in for five years now. Margaret brennan at the white house, thank you. Jackson apologized to the family of tamir rice after the city billed his estate 500 for ambulance services. The city also tore up the bill. In 2014 a cleveland cop shot rice who was 12. He was holding a gun that turned out to be a toy. He died the next day at the hospital. The officer was not charged. In a Big Development today, scientists have announced what may be among the greatest discoveries in the history of physics. They believe they found gravity waves predicted by einstein but never observed. Two huge antennas, one in washington state, the other in louisiana, detected a gravity wave last september. This confirms einstein was right when he described the universe three dimensions, plus time. E. What what physicist call space time. The gravity wave was set off sending a ripple through the fabric. The effect is so tiny, one scientist estimated the ripple consisted the entire Milky Way Galaxy about the width of a thumb, observing that the fabric of the universe stretches and compresses may open an entirely new understanding of nature. Coming up next how explosions l le this are improving airport security. And a scoop by a newspaper sets off an uproar. Cbs overnight news will be right back. And take a big smell. 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And maybe, a chance at greatness. Because shoulders were made for greatness. Not dandruff sounds of birds whistling music introducing new ky touch gel cr me. For massage and intimacy. Every touch, gently intensified. A little touch is all it takes. The tsa is looking for a more professional and effective force of airport screeners. Kris van cleave is in glenco, georgia, tonight at the tsas new Training Academy. Reporter seeing the power of even a small explosive made the threat real for nearly 200 soontobe airport screeners. Two, one. Reporter theyre going through a new Training Program here in georgia designed to address troubling security gaps within the Transportation Security Administration. A damning report by homeland securities Inspector General failed to detect 6 of 70 suspicious items brought through airport check points. Peter neffenger became the tsa administrator last july. What the Inspector General reports show us you can never take your eye off the mission. Reporter shawn weeksfreeman is one of the academy instructors. She was a Flight Attendant on panam flight 330 standing where a bomb explode, where the 7 prepared to land in honolulu. One was killed, more than a dozen injured. When i talk to my class, i tell them, youre not here by accident. And i wasnt saved at that moment by accident because that threat in 1982 is todays threat still. Reporter the academy marks the first time all transportation Security Officers will have standardized training. Previously new hires were largely trained on the job at their home airport. The i. G. , if theyre going one of their teams trying to bring things that should be flagged, will those thipgs be caught . I think well catch them today. Reporter all of them . I dont know. I sure hope we catch all of them. Reporter the students will workt this mock checkpoint. Its complete with all the eqeqpment, scott, theyre going to use i ithe field. And well be right back. A small Catholic University in maryland is in turmoil after a report that its president wanted to weed out struggling students quickly to improve the schools standing. Some professors had been sent packing. Heres chip reid. Reporter ed egan was a professor at mt. St. Marys university in maryland. On a day like this . Id be on campus. Today id be teaching my class on the first amendment. Reporter but on monday he was fired in a letter a School Official said he is persona non grata and not welcome to visit the universitys campus because he violated his duty of loyalty to the school. It all began last month when the Student Newspaper repoed that the School President simon newman wanted ofessors to identify struggling students in the first few weeks of school so they could be encouraged to drop out. Some faculty members resisted and the school paper reported that newman told them, this is hard for you because you think of the students as cuddly bunnies but you cant. You just have to drown the bunnies. Put a glock to their heads. Many students and faculty were outraged. Its not just the words, but its the plan that the words described. Reporter whats wrong with the plan . Weeding out students because we think they might not do well ok better. Thats not mt. St. Marys. Reporter egan was the faculty adviser to the school paper and says hes being punished for accurate but embarrassing reporting by the students. You did not tell them what to write . I did not. Reporter in any way . No. Anybody on campus who knows the students, knows that nobody would manipulate these students. Reporter they cant be manipulated . They are independent, strong, bright people. Reporter a petition protesting the firing of egan and another professor has been signed by about 7500 professors across the country, and, scott, the university declined our repeated requests for an interview. Instead, they issued a statement saying the two professors had violated the code of conduct. Chip reid, thanks, chip. Into joy. Woman what does it feel like when a woman is having a heart attack . Chest pain, like theres a ton of weight on your ches severe shortness of brcath. Unexplained nausea. Cold sweats. Theres an unusual tiredness and fatigue. Theres unfamiliar dizziness or lightheadedness. Unusual pain in your back, neck, jaw, one or both arms, even your upper stomach, are signs youre having a heart attack. Dont make excuses. Make the call to 911 immediately. Learn more at womenshealth. Gov heartattack when the twins were about 10 days old, the doctors told us they were going to need blood transfusions. Were so proud of who theyve become. As a result of one person, deciding to spend an hour of their life giving blood is just immeasurable, how powerful that one donation could possibly be. Our final story tonight is written on the face of a young child, whose joy mere words cannot describe. Heres elaine quijano. Elsa had magical powers and could create things out of snow and ice. Reporter 4yearold Mattie Zapata cant get enough of her bookings on tape. Anna was delighted. Reporter because the voice is her mother, mandi balderas, locked in a prison four hours away. I told her how i missed her. Even though im not there physically, i know shes listening to my voice, spending time with me. Reporter each month while balderas and other selected inmates choose a story to record its called storybook project, and it runs in six womens prisons across texas. It was a Sunny Afternoon at the end of may. This story begins within the walls of a castle. We werent scared as long as we were together. Reporter 64 of incarcerated women nationwide lived with their children before prison. Orybook tries to ease the pain of sepepation. If you put your hand in mine, youll feel my love powers. Love you. Reporter mattie was 18 months old when her mother went to p pson for a dwi crash that killed the other driver, a crime of manslaughter that victimized her daughter, too. I cryor mommy. How come . Because i miss her. If it wasnt for the books, she wouldnt be able to have the bond that we have now. Her and i know it means something to me. Reporter but the fact is, you got behind the wheel of a car when you had alcohol in your because of that. Didnt you forfeit your right to do things like this when you made that decision . Yes, i made a decision. But its not about the decision anymore. Its about how we handle the circumstances. Thats how im choosing to handle the circucutances, by helping my kids the best i can from where im at. Hey, mattie, its me, mommy. Reporter balderas has four years left of an eightyear sentence. When she finally reunites with her family, she hopes her children wont mistake her voice for a strangers. You are my sunshine, my only sunshine, reporter elaine quijano, cbs news, coluluus, texas. I love you always, mommy. And thats the overnight for some of you, the news continues. For others, check back with us later for the morning news and for cbs this morning. York city, im scott pelley. This is the cbs overnight news. Hello and welcome to the overnight news. The feral government is warning of possible shortages of test kititfor zika virus. The tests are designed to let pregnant women know if theyve been infected by the virus that can cause severe birth defects. The cdc is hipping more than there may not be enough to go around. The virus is mostly spread by mosquitos. People who live in Southern States are especially vulnerable. And the cdc is warning of a possible widespread outbreak in puerto rico. Women who are thinking about getting pregnant are to avoid traveling to latin america, especially brazil. Brazil is hosting the summer female athletes in a bind. Morgan in the box with that shot and theyre on the board reporter world class female athletes, inclcling members of the u. S. Womens soccer team are raising safety concerns ahead of this summers olympics in rio de janeiro. Earlier this week star player alex morgan called the virus a very scary thing and goalie hope solo went even further, saying its possible she might skip the games. All i can do is speak for myself. If the olympics were today, i wouldnt go. We have six months. We have a little time to figure things out. Our goal really is to protect pregnant women. Reporter the cdc says its working nonstop to gain control over the rapidly spreading virus. Suspected ties between the virus and the birth defect microcephaly appear to be strengthening. On wednesday the cdc reported that zika was found in the brain tissue of two brazilian babies who died from microcephaly less the strongest evidence today that zika is the cause of microcephaly but its still not definitive. Reporter the new england journal of medicine cited a separate case from october. According to the report, a 25yearold woman living in slovenia chose to have an abortion after learning the child she was carrying had severe developmental abnormalities. An autopsy later revealed the fetus had microcephaly. The woman who had been living in northern brazil showed zika symptoms during her pregnancy. Officials say the virus is spreading quickly because the aedes aegypti, which transmits the disease, is difficult to eradicate. Its eggs can be droughtresistant and can persist for some time. And it can bite four or five people in the course of one blood meal, meaning it can spread disease quite quickly. Reporter according to the cdc, a zika vaccine could be catholics for choice is asking pope francis not to condemn contraceceion or abortion in an attempt to help women protect themselves from the virus. The department of Homeland Security is taking steps to ensure airport screeners are properly trained. For the first time the Transportation Security Administration will start training all screeners at one centralized academy, sort of a tsa boot camp. Kris van cleave reports from the federal Law EnforcementTraining Centers in glenco, georgia. Reporter this checkpoint is the centerpiece of the new tsa academy and the twoweek training course. This grows out of a top to bottom review done by the agency that found gaps in training and he proficientcy on equipment like this. The new Training Academy aims to chan that. An explosive lesesn on the dangers these soontobe airport screeners will be asked to help prevent. This is a explosive reporter the nearly 200 the first to go through the new tsa Training Academy. Its controllededhaos. Its a very difficult job. Reporter among those, 19yearold yasmin. Its a challenge but its a rewarding challenge. Reporter this is the First Time Since the a ancys creation ter 9 11 that the tstshas centralized training of newly hired screeners, who make between 31,000 and 45,000 a year. Previousus they were t tined largely on the job at the airport where they work. Do you see anything in that bag . Reporter the academy opened in january as the tsa tries to recosery from a series of highprofile embarrassments, including two officers fired for allegedly groping a passenger in denver. And in a test where they failedd Peter Neffenger took over as report. I tried to refocus on the mission. To ensure something that doesnt get past the checkpoint doesnt get past. Reporter will you catch i hope so. Reporter all of them . I sure hope we catch all of them. My test shows we have dramatic dramatically improved