To the late show we look at some of the bits that put him on the edge of comedy. Hello, kitty. Meoooww. This is the cbs morning news for monday, may 18th, 2015. Good morning. Good to be with you. Im annemarie green. There are fears of more violence in texas this morning following a deadly shootout between rival motorcycle gangs. At least nine members were killed and 18 injured. The fight took place in front of a popular waco restaurant. The parking lot looked more like the alamo than a busy shopping center. They met to discuss their differences. The police who were tipped off were there as well. Reporter investigators have blocked off a massive space near a restaurant where this all started. You can see we still have a very Large Police Presence not only here but across the area because officers believe more may show up. This is the most violent and gruesome scene i have dealt with. Reporter the said his department feared Something Like this could happen. For the last two months officers have responded to the twin peaks restaurant to break up fights. As many as five separate groups converged with close to 200 members in one place. It may have been an argument over a parking spot that started it all. It started in the bathroom with most likely a push or shove or somebody looking at somebody wrong r because police anticipated the violence members of the s. W. A. T. Team were already monitoring and quickly moved in as soon as they heard the gunshots. We have been getting routes throughout the day that bikers from out of state are headed this way. We would encourage them not to because we have plenty of space in our county jail to put them there. Reporter police say theyre amazed no civilians were hurt in all this. They credit having officers in place. Gabriel rojas, cbs news in waco, texas. Some marines were training in oahu. 21 people survived the incident but were taken to the hospital. Witnesses say they saw three osprey aircraft performing maneuvers. We couldnt see the aircraft anymore and when it cleared up, we saw two come up and they continued to circle. There were just two that came up. Reporter the program was almost scrapped after it kill 2d 3 marines in 2000. The bodies of six marines have been identified. They include two captains, two sergeants, to corporals. They were delivering relief aid when their chopper went down last tuesday. Two soldiers from nepals army were also killed. Isis militants have taken control of a key iraqi city. Ramadi 70 miles west of baghdad fell to isis fighters yesterday as the defending iraqi forces retreated following days of intense fighting. Susan mcginnis is in washington. Susan, good morning. Annemarie good morning. This is the biggest defeat for the Iraqi Government against isis since last summer and it has something here in washington questioning whether the u. S. Effort to help defeat isis which is limited to air strikes is enough. The apparent retreat follows days of intense fighting between iraqi troops and isis militants. The battles left hundreds of civilians and soldiers dead and there are reports that isis is carrying out mass executions of Iraqi Security forces. Ramadi fell despite intensified u. S. Led air strikes in recent weeks to save the strategic city. Some military analysts believe its time to consider a new strategy. Clearly at this stage t 2000 or more air strikes Coalition Forces have done in iraq has not reversed the tide of isis but slowed it and there must be some ground component if isis is to be defeated and the city recaptured. A spokesperson did concede isis now has the advantage. Local officials estimate about 8,000 people fled the violence in ramadi in the last few days. This woman says chaos, violence and terror are spreading on the streets. I rams prchl has ordered troops neera mehdi not to abandon their approach while mill labor litsch ya are preparing a counterattack. Secretary of state john kerry says hes confident the capture of ramadi will be reversed in weeks. Amtrak is back to business six days after the derailment. First train will leave from new york headed to philadelphia, the site of the crash that killed eight people. The speed of the system is now operational on the northbound crash where the crash occur. A service was held yesterday to honor the victims. Investigators have been looking into reports that something hit the locomotive windshield. Ntsb member Robert Sumwalt said whatever it was, it was not a bullet. Id like to downplay that part. It looks like something the side of a grapefruit if you will and it did not even penetrate the entire wheel. The engineer says he does not remember anything in the few moments before the crash. Police in washington, d. C. Want help in solving a mystery. It started with a house fire but investigators found the remains of four people the owners son, and housekeeper were beaten before the fire. They have video showing a man called a person of interest. They believe he may have taken a family car and later set it on fire. Coming up on the morning news, plane hacker. The man who claims he was able to fly an airliner from his seat on the plane. And later, visitors at the 9 11 memorial are sickened by a mysterious odor. This is the cbs morning news. People with type 2 diabetes come from all walks of life. If you have high blood sugar ask your doctor about farxiga. Its a different kind of medicine that works by removing some sugar from your body. Along with diet and exercise farxiga helps lower blood sugar in adults with type 2 diabetes. With one pill a day, farxiga helps lower your a1c. And, although its not a weightloss or bloodpressure drug farxiga may help you lose weight and may even lower Blood Pressure when used with certain diabetes medicines. Do not take if allergic to farxiga or its ingredients. Symptoms of a serious allergic reaction include rash, swelling, or difficulty breathing or swallowing. If you have any of these symptoms stop taking farxiga and seek medical help right away. Do not take farxiga if you have severe kidney problems, are on dialysis, or have bladder cancer. Tell your doctor right away if you have blood or red color in your urine or pain while you urinate. Farxiga can cause serious side effects including dehydration, genital yeast infections in women and men, low blood sugar, kidney problems, and increased bad cholesterol. Common side effects include urinary Tract Infections changes in urination and runny nose. Do the walk of life yeah, you do the walk of life need to lower your blood sugar . Ask your doctor about farxiga. And visit our website to learn how you may be able to get every month free. Why are you deleting these photos . Because my teeth are yellow. Why dont you use a whitening toothpaste . Im afraid its bad for my teeth. Try crest 3d white. Crest 3d White Diamond strong toothpaste and rinse. Gently whiten. And fortify weak spots. Use together for 2 times stronger enamel. Crest 3d white. Want to survive a crazy busy day . Sfx cell phone chimes start with a positive attitude. And positively radiant skin. Aveeno® positively radiant moisturizer. With active naturals® soy. Aveeno® naturally beautiful results®. In texas, people had to be rescued from the air after heavy rain and flash flooding. Rainsoaked texas roads could not cope with the torrential downpour. In oklahoma, the Severe Weather caused sig kalkt damage sunday, destroying homes and uprooting trees. Trailers were sent flying and other structures were dried. And power lines were knocked down, leaving residents in the dark. No injuries were reported. New york citys 9 11 museum will be reopened after it was evacuateded on sunday. Visitors standing near the reflecting pool began to choke and cough and showing other signs of difficulty. Chemicals used to kill algae in the pool emit add strong odor. No charges have been filed against a hacker who claims he took control of a passenger jet and steered it off course. He told the fbi he hacked into many oflights. Reporter computer experts Chris Roberts tweeted on sunday that his only interest is to improve aircraft security. According to a search record he told fbi agents he exposed dangerous flaws. Earlier he told them he identified vulnerability with Inflight Entertainment systems and on one flight he successfully was able to cause a plane to climb and move sideways. He told fbi from 2011 to 2015 he come compromised the systems 15 to 20 times. In march he told fox news hed been talking with the federal aviation administration. You basically have to understand how Computer Systems work avionic systems and be able to work and translate between the system. The fbi hasnt said he successfully tracked into the controls but warned him unauthorized access is a violation of the federal statute and that he could be prosecuted. In April Roberts was on a united flight from denver to toronto and tweeted reference to what could be a tampering to passenger oxygen masks. They found that the boxes under and in front of roberts seat showed signs of tampering. It does open up a debate that we need to keep ourselves clearly ahead of anyone who might try to do Something Like this. United says their internal review says it makes them confident his claimants are unfounded. Julianna goldman, cbsnys, washington. Well, straight ahead block of buster. Youll know what that means. The sequel to Pitch Perfect. And later David Lettermans funniest moments. Stop in for lunch and tap, swipe, and go. Chilis. Fresh is happening now. Ive smoked a lot and quit a lot but ended up nowhere. Now i use this. The nicoderm cq patch, with unique extended release Technology Helps prevent the urge to smoke all day. I want this time to be my last time. Thats why i choose nicoderm cq. Of buster. Of buster. Only nexium 24hr gives you nexium level protection for frequent heartburn all day and all night. Try nexium 24hr, the 1 prescribed acidblocking brand, and get all day, all night protection. Nexium level protection. Heres a look at todays forecast in some cities around the country. On the cbs moneywatch, a chinese tech giant accused in a counterfeiting lawsuit, and Pitch Perfect 2 hits the right notes to win the box office. Jill wagner is at the New York Stock Exchange with that and more. Good morning, jill. Good morning, annemarie. The chinese euconecommerce alibaba says it will fight a group over counterfeits. They allege al they. It is the second time theyve been sued over counterfeits in less than a year. Wall street hopes to continue the upward trend. The dow gained 1 points. The s p finished 6 points higher for the week and the nasdaq gained 44 points. Expect some crowded light this summer. A Record Number of travelers are expected to fly somewhere. U. S. Airlines will carry 220 passengers between june 1st and august 31st. Thats the most since 2007. On average there will be 2. 4 million passengers day. That is 4. 5 more than last year. Pitch perfect 2 was the latest hit at the box office. The sequel to the 2012 hit raked in more than 76 million. Universal says 62 of the audience was under the age of 25. Mad max fury road came in second. And a Legendary Store fao schwartz will close its flagship store. The company is trying to find a less expensive face here in manhattan. Annemarie . Jill, weve got to get down there and dance on the giant piano while we still have a chance. Absolutely. Jill wagner at the New York Stock Exchange. Thanks a lot. When we return a funny farewell. The comic moments that only David Letterman could pull off as he gets ready for his final late show this week. Smash me. Dear god, smash me into a million pieces little miss puffytail thinks every time someone enters this room. For while the people who come in here can use quilted northern, a toilet paper that works so well they can completely forget their experience. Little miss puffytail can never forget. She can dream. Dream for the sweet, sweet swing of a careless elbow. Quilted northern. Designed to be forgotten. I take prilosec otc each morning for my frequent heartburn. Because it gives me. Zero heartburn prilosec otc. The number 1 doctorrecommended frequent heartburn medicine for 9 straight years. One pill each morning. 24 hours. Zero heartburn. Forecast in some cities around the country. In sports the Houston Rockets returned to the nba western conference finals for the first time in nearly two decades. The rockets erase a 31 series deficit and beat the Los Angeles Clippers in game seven. James harden scores 31 points for houston. The rockets face golden state in the cough kohn frens finals. Atlanta braves shelby was one away with a nohitter. Miamis justin boerse singles. Miller would finish the game and get the braves a 60 win. Don drapers odyssey through the golden age of advertising is over. After seven season 92 episodes and an untold number of cocktail mad men reached its conclusion. And we will tell you what happened to the characters in the awardwinning drama but the episode ended with a nod to the real life Advertisement Television world id like to buy the world a coke, during that time dave has been on the cutting edge of comedy. Suzanne marques has a look at some of his greatest bits. Hello kitty, meoooow. Reporter daves humor has always been a little offbeat, a little an such. What do you have there . Pizza. Can you take the pepperoni off the pizza and leave it on the sidewalk. Reporter and destructive. Dashs stuck with a particular kind of comedy. There was a sense of reverence and sort of anything can happen. Reporter two of lettermans significant segments were stupid pet tricks and stupid human tricks. There time for something called stupid pet tricks. And dont forget his legendary top ten list. Number ten, our electric sexual chemistry. Yeah. Letterman didnt reinventilate night but letterman did it in a way that people had. Really seen before and certainly hadnt seen done that way. Ive got Zsa Zsa Gabor with me. Za would like a fillet oh fish sand which. What kind of wine do you have. Reporter now dave says he isnt into viral videos but one look at these bits and hes really a pioneer. Any one of them could have gone viral. Reporting in new york im suzanne marquez, cbs news. Three days to go before dave heads off into retirement. Tonight his guest is oscar winner tom hanks and tomorrow its where it all began. Lettermans first ever guest bill murray makes one last visit to the ed sullivan theater. Jane pauley has the only interview. Its online on cbsnews. Com. This is the cbs morning news. No matter how they tossed the dice. It had to be. The only one for me is you. And you for me. So happy together now theres a rewards program that lets you earn points at one place and use them at another. Introducing plenti. When it comes to rewards theres plenti together. What do you think of when you think of the United StatesPostal Service . Exactly. Thats what pushes us to deliver smarter simpler faster sleeker earlier fresher harder farther quicker and yeah even on sundays. Whats next . Well show you. The smithsonian is completing a monumental project. The museum of africanamerican history and culture. The building has been a long strug, scott pelley got a preview from lonnie bunch, the museums founding director. Reporter were on the ground floor. This is where people will get their First Experience in the museum. So whats going to be here . Those theyll walk in either from the mall or the constitutional avenue and run into amazing pieces of africanamerican art. When all of this is finally complete, what will america have . America will have a place that allowed them to remember to remember how much we as a country have been improved, changed, challenged and made better by the africanamerican experience. Theyll have a place that they can call home but theyll also have a place that will make them change. Reporter butve this place is only space until you fill it. Oh my goodness. Did somebody already look at some of these things . No. Seven years ago the smithsonian began rummaging the attics and basements of america. This may have marked a milestone in his life and what we dont know is what that was. But at least it gives me something that i can investigate. 3,000 people brought their Family History to 16 smithsonian events across the country. And this is an early free black family based out of baltimore. Yes, yes. It sounds like antiques road trip. It is like antiques road trip. We have experts across the field, experts in conservation, experts who understand about paper, metal, you name it fabrics, textiles and they come in and review object for the public. Some of that looks like its dried out a little bit. Doubt put it near an air conditioning unit because it will dry it up too much. How do you convince someone to give up a priceless family heirloom . You know what . Our museum pitches itself. All we have to do is tell the absolute honest truth. People have been waiting for us. People in america have been waiting for this moment. And so literally they just hand us things. Well, you can get a look at some of the artifacts that will be on display at the museum by going online. Scott pelleys full report is on cbsnews. Com. Welling coming up after your local news on cbs this morning, republican senator Lindsey Graham stops by studio 57 to discuss his plans for 2016. And we talk with former secretary of defense, robert gates, on the fight against isis. Finally this morning, words of wisdom and advice for georgetowns graduating class from charlie rose. The cbs this morning cohost told the class of 2015 to start the next chapter of their story to take action make choices, and lose themselves in the greater good. Thats the cbs morning news for this monday. Im annemarie green. Have a great day. Captions by vitac www. Vitac. Com test. From the cbs Broadcast Center in philadelphia. This is cbs3 eyewitness news. Amtrak resumes Service Today on the northeast corridor less than a week after that massive derailment that killed eight people. This as investigators continue to look for what caused the accident. Well tell you what they know to this point. Good morning everyone, im ukee washington. Im erika von tiehl. Also today, president obama be in our area, why the commander in chief is visiting camden, katy . Good morning, erika. We can expect to see little dose of summer out there today yet again, some sunshine, also some humidity, heat to go with it along with that it will probably also see couple of showers and thunderstorms firing up out there. Pattern stays a little on the active side. You can see right now not much, but little bit of activity out