With a western edition of the broadcast. The death toll continues to rise after torrential rains flooded parts of texas. At least four people have died and several others are missing after some areas were hit with anre than 20 inches of rain. Mireya villarreal has the itest. You can see the sun, it is a bright, sunny day and you can see what is happening down there. Reporter the rain has stopped, but in some areas flood waters continue to rise, submerging cars and stranding drivers. Some rivers could reach record levels in the next few days, prompting several Rural Counties between austin and houston to call for evacuations. Hundreds of residents including Kurt Whiteman have been forced from their homes. Ive been here 20 years and this is ive never been under r flood yet. This is the worst i have seen it. Reporter 21yearold Darren Mitchell posted this eerie picture from inside his truck on facebook as water surrounded him. All i wanted to do was go home. Witness lashondoe smith saw mitchell struggling. He got out of his truck, he got in the bed of his truck, he got back out on top of his truck, he got back in the bed of as truck. And then all of a sudden he got back in his truck and like maybe ten, 15 minutes after he was in his truck, it just flipped and he topsided into the water. We dont reporter Washington County officials confirm one of the redies they recovered on saturday was mitchells. To see his truck like that, and know i witnessed something hake that, it just hurts. Reporter today in kansas, crews resumed the search for an 11yearold boy who was apparently swept away by a swollen creek on friday. Elaine, last night officials announced that the search for this young boy has turned from a rescue mission into a recovery mission. Ja quijano sad news, mireya villarreal, thank you. Bopical storm bonnie became tropical depression bonnie today. Lee storm not only spoiled the Holiday Weekend for beach crowds in the carolinas, it also caused major traffic problems. David begnaud is in coosawhatchie, South Carolina, david . Reporter elaine, im standing along side interstate al and it is a parking lot. Anopical storm bonnie is a hestant memory now, but the rain bands from it have created a traffic nightmare. Look at this. R en can you ever walk on the interstate . S ats because it has been closed like this since nearly 7 00 this morning and it goes like this for ten miles, elaine. One man just told me, i dont have enough gas to stay like this on the side of the road. Some people have been stuck in their cars for nearly eight hours. I want to show you a picture of what its like about six miles ahead. There is a one mile stretch of the southbound lane of interstate 95 here in southern South Carolina that is underwater. It is nearly waist deep. Co fact, we have video, one couple had to be rescued. Their car was stranded on highway 17, which is just off interstate 95. They left their vehicle, came back to get something and became stuck in the flood water and had to be rescued. We are in Jasper County, South Carolina. Acd across this area of what is owown as the low country here in South Carolina, there is significant and severe flooding. And whats happening were being told from local meteorologists ca that a system that was a part of Tropical Storm bonnie is now sitting over this Jasper County area and the rain has not let up. 95ck live now along interstate 95, elaine, i asked one trooper, how long do you think the g terstate is going to be closed. And he said, were already making preparations for tomorrow. But again, some people have been sitting in their car since 7 00 this morning. Elaine . Quijano difficult situation for travelers there. David begnaud in South Carolina, thank you. Atpublican president ial edndidate donald trump rolled into washington d. C. For the Rolling Thunder biker rally. One of the largest motorcycle rallies in the world is held weery memorial day weekend to honor prisoners of war and troops missing in action. Julianna goldman is in washington. Julianna . Reporter elaine, donald trump delivered his standard veump speech tearing into Hillary Clinton and touting his immigration proposal. But he gave a special shout out to troops and veterans on this memorial day weekend. We are going to rebuild our s litary. Were going to make it bigger and bigger and better and stronger than ever before. Were going to take care of our urterans. [cheering] our veterans have been treated so badly in this country. Reporter now trump spoke in teont of a smaller than expected crowd at the lincoln memorial, to some of the thousands of bikers who ride into the nations capitol every year to pay tribute to our troops honoring veterans, prisoners of sir and troops missing in action. Trump thanked them for supporting his campaign, but didnt make any reference to his controversial comments last year when he said that senator john mccain who spent five years as a p. O. W. In vietnam was not a war hero. At the time he said, hes a war hero cause he was captured. I like people that werent captured. While mccain still maintains trump needs to apologize for those comments, he also says he will be supporting his partys presumptive nominee. Trump did announce today that on tuesday he will be releasing the names of Veterans Charities that received money he raised earlier yis year. The billionaire businessman has come under fire for not fully accounting for the 6 million he says came from a january fundraiser just before the iowa caucuses. Elaine, a spokeswoman from Rolling Thunder told the onshington post that the organizations founder supports trump. She brushed aside the controversies and said trump will make our military great again. Quijano Julianna Goldman in washington, thanks. Hn dickerson is cbs news political director and the host of face the nation. So john, we have seen these very heated protests against donald trump continue. How worried is the r. N. C. That its convention could look like what we saw in new mexico and california this past week . Well, i think theyre ierried. They believe that a lot of these protests are set up, that this isnt people just expressing their First Amendment rights, rst that these are mischief rykers trying to cause calamity for the republicans. So they are quite well aware of it. Authorities in ohio are well aware of it. And so theyll just have to hopefully manage it, but we ont really know until we get there. Quijano turning to the owmocrats, how much of a setback for the Clinton Campaign is the email controversy . The email report from the Inspector General, the state department is a problem for two reasons. One it reminds people of questions they had about the way hillary runs her affairs. Questions that have been there for a long time. Y d the other problem is that it erves a realtime fresh example of some of the problems people have had with the question of whether shes honest and trust worthy. Because her answers and her campaigns answers are just at odds with the report from the Inspector General. This is not a political opponent, this is an Inspector General for the state department. And that disconnect exacerbates whats been an ongoing problem for her. Quijano John Dickerson in shington, thank you. Thanks, elaine. Quijano two gunmen armed with automatic rifles opened fire on a street in houston today killing at least one person in his car. One of the suspects was killed in a shootout with police. The second was wounded and taken to the hospital. Two officers and at least three other people were also injured. The motive for the shootings is under investigation. Chicago has seen an alarming tike in gun violence this weekend. By sunday morning, at least 40 , ople had been shot, resulting in at least four deaths. Shootings and homicides are up about 50 this year in the nations Third Largest city. Outpacing new york and los angeles. Much of the gun violence is gangrelated. The cincinnati zoo is open this weekend, but its gorilla world is closed indefinitely. A fouryearold boy got into the gorilla enclosure on saturday and was hurt. An endangered gorilla had to be killed. Jamie yuccas has the latest. Ne reporter cell phone videos from people visiting the cincinnati zoo show a fouryear old boy in the gorilla world moat. Dhe boy somehow got through a barrier and fell at least ten feet down into the shallow n ream. Thats when harambe, a 17year old endangered western low land gorilla approaches the boy. E first it looks like hes been protective, but then his behavior turns threatening. Oh my gosh. The gorilla has the child. D. D is dragging him around the pen. Reporter the boy does not appear to scream or panic. Zoo officials removed two female gorillas from the enclosure, but did not approach the gorilla for at least ten minutes. Eventually, zoo president thane mayard said the 400pound gorilla became violent. It seems very much by our professional team, our Dangerous Animal Response Team to be a life threatening situation. So the choice was made to put down or shoot herambe. Reporter the zoo says its team chose not to tranquilize the gorilla because the animal was agitated and it would have taken too long to sedate him. The zoo is in the business of taking care of endangered animals, and we certainly dont want to be in a situation where they have to be killed. Reporter animal activists have created online petitions and facebook pages like justice for harambe. Many angry the endangered gorilla was put down. Others want the boys mother to face child endangerment charges. Ieople for the ethical treatment of animals or peta released a statement saying the gorilla enclosure should have been surrounded by a secondary barrier between the humans and the animals to prevent exactly this type of incident. The zoo says it is reviewing its ldcurity around that enclosure. Elaine, the boy was treated for nonlife threatening injuries and should be okay. Quijano terrifying images. Jamie yuccas, thanks so much. The final mass was held sunday at st. Francis xavier Cabrini Church in scituate, massachusetts. The church is closing after a 12year around the clock vigil by parishioners who tried to keep their beloved house of worship open. Named after the first Italian American saint, st. Francis ntvier Cabrini Church has sat near the shore of scituate, massachusetts, since the 1960s. Because of declining attendance and a shortage of priests, the seman catholic archdiocese of boston in may of 2004 decided to shut down the church and sell the 30 acre waterfront property. We visited st. Francis in 2013 and met with parishioners on a t 7 vigil their peaceful protest to save their church. Earlier this month, the u. S. Supreme court refused to hear their final appeal leaving parishioners no choice but to end their fight. Today they celebrated their final mass. Mam joined now by parish member mary ellen rogers. Mary ellen, you were baptized at this church, you had your first communion there, you were married there, there have been family funerals at that church. What are you feeling right now . I am feeling a broken heart. But more so that our cardinal, Cardinal Sean omalley, has never reached out to us and come to this church. Hes never stepped foot in this church over the past 11 and a half years. Reporter what is going to happen to the church at this point and its seaside property there . Well, it is, we are on 30 acres of prime coastal real estate. So if you look around the neighborhood, theres multimillion dollar homes being built here. So i dont know, but i anticipate that this church will be bulldozed and there will be large houses going up here. Reporter all right, mary ellen rogers, thank you so much for your time. Thank you. Quijano well, we have a winner at the 100th indianapolis 500. Checkered flag. You just won the indy 500, baby quijano rookie Alexander Rossi took the trophy. Hes just 24 years old. Over 350,000 people packed into the indianapolis motor speedway, the highest capacity stadium in america. After crossing the finish line, rossi drank from a glass bottle of milk, an indy tradition that goes back over 80 years. When the cbs weekend news continues, dr. Jon lapook explains the rise in colon cancer rates among americans under 50. In my lower back but now, i step on this machine and get my number which matches my dr. Scholls custom fit orthotic inserts. Now i get immediate relief from my foot pain. My lower back pain. Find a machine at drscholls. Com i use whats already inside me to reach my goals. 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Quijano a new study finds colon cancer rates are declining overall, but among americans under 50 years old, a group not normally considered at risk, the rates are increasing. Dr. Jon lapook explains why. , reporter three years ago at age 33, david neway went to the doctor with a stomach ache and was diagnosed with widespread colon cancer. Im still perplexed as to how r is all happened. Ur reporter neway is part of a disturbing trend. Over a decade, the number of colon cancer cases in people under age 50 rose by more than 11 . Se the same time, cases in people over 50 dropped 2. 5 . Likely because colonoscopy in heat group removes benign polyps before they can turn cancerous. Current guidelines suggest starting routine screening at age 50. The reason for the rise in younger people is unclear. Possibilities include the epidemic of obesity, a lack of physical activity, and americas highfat diet, all risk factors for colon cancer. Dr. Daniel labow treats colon Cancer Patients at new yorks mount sinai hospital. As we learn more and understand the genetic defects that go on and study some of these younger patients, perhaps we can hone in on which population of this younger population that we need to screen closer. Reporter labow says it is important to be aware of symptoms. Th first and fore most, is educate that any time there is a symptom for colon cancer bleeding, change in bowel dibits, unexplained abdominal pain that needs to be followed up closely and not ignored just because the patient is under 50 years old. Reporter after 12 rounds of chemotherapy and three surgeries, neway has been in o mission for two years. I dont know what it was pout that particular like dull pain i had that prompted me to go to the doctor, but im really glad i did. Reporter screening earlier than 50 is suggested for those with certain risk factors such as a Family History of either lolon cancer or precancerous polyps. In addition to colonoscopy, there are other less invasive methods such as new tests to look for suspicious genetic fragments in the stool. Dr. Jon la pook, cbs news, new york. Quijano still ahead on the cbs weekend news the nearly 400yearold bonsai tree that survived the hiroshima bombing. Proof of less joint pain and clearer skin. This is my body of proof that i can fight Psoriatic Arthritis with humira. Humira works by targeting and helping to block a specific source of inflammation that contributes to both joint and skin symptoms. Its proven to help relieve pain, stop further joint damage, and clear skin in many adults. Humira is the number 1 prescrib