Delay in his deportation. His mother was sent back to texas. Couch and his mother were arrested in mexico on monday after he skipped a probation checkin and spent almost three weeks on the run. Couch killed four people in 2013 while drunk driving, avoiding jail with the defense that his wealthy parents hadnt taught p after a series of Deadly Police shootings, today, chicago mayor rahm emanuel said officers should only use guns as a last option. Adriana diaz reports the mayor is revamping police training. Reporter rahm emanuel stepped before the cameras as a mayor under a spotlight, with a Police Department in crisis. Ultimately, what we are doing is injecting some humanity into the work of our Police Department and the Police Officers. Reporter the mayor called the new policies a dramatic shift in police practices. He is doubling the number of tasers for officers to 1,400. Increasing desk duty for Police Involved in shootings from three days to 30. And focusing on deescalation training to reduce the number of policeinvolved shootings. Tensions boiled over last month with the release of dash cam video showing officer Jason Van Dyke killing 17yearold Laquan Mcdonald in october 2014. Protesters have taken to the streets, demanding the mayor resign. Andy shaw, who heads the better government association, says thats not likely to happen. Hes trying to save his reputation and his legacy, and hes also trying to save a city in crisis. Reporter one made worse by this weekends Fatal Shooting of 55yearold bettie jones. She was accidentally shot as officers opened fire on 19year old Quintonio Legrier during a domestic disturbance call. What about the taser . Taser him down. Dont start shooting people, innocent people reporter thats a problem the mayor hopes todays announcement will solve. Theres a difference between whether someone can use a gun and when they should use a gun. And we as a city must train for that difference. Reporter on average, one person per week is shot by police in chicago. Jim, this month, the Justice Department stepped in to investigate patterns in the Police Departments use of force. Their initial report should be out in a year. Adriana diaz covering for us tonight in chicago. Thank you. Four secret Service Agents were seriously hurt in a headon collision in New Hampshire last night. The driver of the other car was killed. The agents had been assigned to a Hillary Clinton campaign event. In the president ial campaign today, the republican front runner kept on firing at the top democrat and her husband. Heres major garrett. Reporter at a rally in south carolina, donald trump said hes ready for a woman president , just not Hillary Clinton. I love, love, love having a woman president. Cant be her. Shes horrible. Reporter accused by clinton of using sexist rhetoric, trump again brought up former president bill clintons marital infidelities. And she wants to accuse me of things, and the husbands one of the great abusers of the world . Give me a break. Give me a break. [ applause ] reporter trump invited reporters aboard his elegant private jet tuesday. Try not to crash the woodwork if possible. Reporter to announce he would start spending 2 million a week on tv ads. Were going to be talking about a lot of things, including the border, including trade, including isis and security for the country. Reporter with a little over a month before the first voting begins, republicans hoping to be the mainstream alternative to trump have turned on each other. The superpac supporting jeb bush attacked marco rubio for missing senate votes to campaign and fundraise. Politics first. Thats the rubio way. Reporter Chris Christie joined in, saying rubio should have flown to washington to vote against the recently passed budget bill. The vote happened and thats my observation, and its its hardly an attack. If marcos that thinskinned, he doesnt belong in this business. Reporter rubio said his fellow candidates are getting increasingly desperate. Chris christie is a funny guy but hes never in new jersey. Hes gone half the time. Reporter a recent cspan Analysis Shows rubio cast fewer votes than any senator running for president. And jim, bush pulled all tv ads in iowa and south carolina, and sent most of his National Staff to those early voting states to help save his flagging campaign. Major garrett, thank you very much. In new york city today, a final salute for a fallen hero. Thousands of Police Officers and u. S. Service members lined the streets near st. Patricks cathedral for air force National Guardsman and nypd detective joseph lemm. He and five others were killed last week in a bombing near Bagram Airbase in afghanistan. Lemms fouryearold son wore his fathers hat and saluted his dad. Californias drought has killed millions of trees. Weve got the hightech pictures to prove it. And why so many seals and sea lions are in distress. The i did everything i could to make her party perfect. Almost everything. You know, 1 i n 10 houses could get hit by an expensive septic disaster. But for only 7 a month, ridx helps break down waste. Avoid a septic disaster with ridx. Redid you say 97 . 97 yes. You know, that reminds me of geicos 97 Customer Satisfaction rating. 97 . Helped by geicos fast and friendly claims service. Huh. Oh yeah, baby. Geicos as fast and friendly as it gets. Woo geico. Expect great savings and a whole lot more. Dont even think about it. Cough if you can hear me. I took mucinex dm for my phlegmy cough. Yeah. But what about mike . It works on his cough too. Cough it works on his cough too. Mucinex dm relieves wet and dry coughs for 12 hours. Lets end this. Some undeniable good news from the recent storms in the western u. S. The snow pack in the Sierra Nevada mountains is significantly above the average for this time of year. But thats not enough to reverse the damage from californias historic drought. As ben tracy reports, a Staggering Number of californias trees are dying. Reporter this hightech flying laboratory has been soaring over california, measuring the impact of four years of drought. Theres a lot of red on this screen. Which is a sign that were over an area thats in trouble. Reporter scientist greg asner says his team has made a startling discovery 888 Million Trees in californias forests have seen measurable water loss since the drought began. Youre basically saying the drought has impacted nearly one billion trees in california. Thats correct. Reporter they can be this precise because their plane is equipped with stateoftheart lasers that scanned 15 acres of forest every second. Its like having xray vision that produces these firstof theirkind 3d images of the health of every single tree in the forest. The red areas on this map show severely droughtstressed trees. Blue areas are healthier. Your equipment reads how much moisture is in each individual tree . Yeah. The measurement is focused on how much water is in the foliage itself. Its like getting a blood test. Its really one of the key indicators of the health of a tree. Reporter the u. S. Forest service says more than 29 Million Trees have already died. Asners team has determined that 58 million more are on the brink. These severely stressed trees, are they passed the point of no return or are they recoverable . We dont know whether a stressed tree is going to absolutely succumb and be gone or if its going to bounce back over time. Reporter the hope is that el ninofueled storms will bring muchneeded rain. In the meantime, these new maps will help the Forest Service know which areas are most vulnerable and wildfire officials know where the greatest risks are. Ben tracy, cbs news, sacramento. The white house is sharing its favorite photos from 2015. Thats coming up. The north pole is famous for extreme temperatures, but not these kind of extremes. 34 degrees today in north pole, new york, and 41 in north pole, alaska. Even at the real north pole it was 33 degrees. That is 50 degrees above normal and the first time its been above freezing in december in 13 years. Off california, the warm waters of el nino have chased away the fish that seals and sea lions rely on for food. At least 4,200 starving sea lions have washed ashore this year and the situation is expected to get worse this winter as Ocean Temperatures rise. Today, the white house released the gallery of president obamas year in pictures. Among the chief photographers favorite shots, this snuggle with the first lady. The fatherdaughter chat where malia tells dad hes got something on his face. The selfie two brothers will never forget. A bride and groom greeting an unexpected guest at their wedding. And the one where Jerry Seinfeld came knocking. Two kids may have figured out we end tonight with a salute to a pair of determined young ladies. Chip reid tells us theyve been saluting american heroes and their families for years. Reporter 10 years ago, rachel okun, then 10, and her sister, kelsi, who was eight, told their parents they had a big idea. They wanted to say thank you to the troops in iraq and afghanistan by offering scholarships to their spouses and children. With some parental assistance, the precocious girls created their own charity called t. H. A. N. K. S. Usa, and soon they were online asking for money. In 2009, when cbs news paid a visit, t. H. A. N. K. S. Usa had raised a stunning 5 million. Ive been able to see that really any person can make a difference, and what you give out to the world you get back 10 times, you know, fold. Reporter now, rachelle is in college, kelsi is a high school senior, and t. H. A. N. K. S. Usa is still going strong. How much money have you raised so far . We just cleared the 10 million mark. Reporter 10 million. Yeah. Reporter yes, 10. 3 million from an idea that began in a dinner table conversation. The money is raised through individual and corporate donations, golf and tennis tournaments, and an annual treasure hunt. So far, t. H. A. N. K. S. Usa has given military family members more than 3,400 scholarships of 3,000 each. What do you think about that organization . I love it. Reporter with the help of t. H. A. N. K. S. Usa, kelly estep will soon get her bachelors degree and then plans to get a masters in social work. Her husband was killed in iraq in 2005. From my experience, i want to flip that into something positive and give back to the military and be there for other families that lose a loved one, son or daughter, husband, you know, wife. Reporter its a story of giving back that began 10 years ago with two young girls. You can change the world. One heart at a time. Reporter and a message thats as true today as it was then. Chip reid, cbs news, mclean, virginia. And thats the overnight news for this thursday. For some of you, the news continues. For others, check back with us later for the morning news and cbs this morning. From the Broadcast Center in new york city, im jim axelrod. Captions by vitac www. Vitac. Com this is the cbs overnight news. Hi, everyone. Welcome to the overnight news. Im demarco morgan. For years, Comedian Bill Cosby has beaten back allegations of Sexual Misconduct by pointing to a simple fact, he had never been charged with any crime. Well, thats all charged. He is free after posting a 1 million bail. Jericka duncan reports. Reporter this afternoon, attorneys for Comedian Bill Cosby walked him into this small courthouse in elkins park, pennsylvania, to hear the criminal, Sexual Assault charges against him. His accuser is andrea constand, a former Temple University employee who first told police about the alleged incident over a decade ago. Constand says in the winter of 2004, she went to cosbys house for career advice. Cosby offered, and she took, three blue pills and wine to relax. In the criminal complaint released today, she told police within a half hour, she experienced, blurred vision and difficulty speaking. Her legs felt rubbery, like jelly, and she had no sense of time. She says though she was unable to move or speak, she felt cosby fondle her breasts and vagina, and woke up about 4 00 the next morning, still in his home. Prosecutor kevin steele the victim came to consider mr. Cosby her mentor and her friend. Today, after examination of all the evidence, we are able to seek justice on behalf of the victim. Reporter when cosby was questioned by police back in 2005, he admitted the two had sexual contact but said he had given constand the allergy pill benadryl and that the contact was consensual. At the time, the District Attorney announced no criminal charges, citing lack of evidence. But investigators reopened her case this past summer after a judge unsealed portions of depositions from the civil suit constand filed in 2005, in which cosby admitted giving drugs to women. Constands attorney asked cosby, when you got the quaaludes, was it in your mind that you were going to use these quaaludes for young women you wanted to have sex with . Cosby replied, yes. He later said he misunderstood the question. The civil suit was settled in 2006 for an undisclosed amount of money. In the past year, more than 50 women have accused cosby of Sexual Assault, many of whom posed for this cover story in new york magazines july edition. Victoria valentiono is one of the accusers. Well, we were absolutely elated, vindicated, validated, and just elated. I cant i cant find a better word for it. Mr. Cosby, did you drug that woman . Reporter 78yearold cosby was able to leave jail after posting 10 of his 1 million bail and giving up his passport. Cosby didnt have anything to say when he left this courthouse, but later this evening, his attorneys released a statement that reads in part it could be a while before the affluenza teen ethan couch and his mother return to texas. Attorneys convinced a mexican judge to delay his deportation for three days, claiming his rights were being violated. Couch and his mother fled to mexico of a video showed him violating his probation after he killed four people driving drunk. Omar villareal is in ft. Worth. Reporter according to reports, couch and his mother made a call to dominos pizza. Thats what tipped off u. S. Investigators. Mexican officials went to the location of the call, which happened to be a resort. Once they were there, they were told the pair relocated to a 350 a night apartment in a more discrete location. Officials say ethan couch had a Going Away Party of sorts before fleeing town with his mother. During the threeweek chase federal and state investigators followed dozens of sightings. Some of which were false, and a tip that the mother and son had driven this pickup truck to the border. Christmas eve is about the time that i think the really concrete information came in. The problem with it was, as you can imagine, a tremendous amount of tourists at christmastime. Reporter their search led mexican authorities helping with the investigation to this apartment complex. According to reports, couch and his mother moved here after first staying at a resort. A picture reveals that he had dyed his blonde hair black. Couch disappeared earlier this month, shortly after this video was posted to twitter. It appears to show him at a party with drinking, possibly violating his tenyear probation. In 2013, when couch was 16, he killed four people and paralyzed another in a drunk driving crash. During the trial, his defense argued that he suffered from affluenza, a controversial condition of his privileged, wealthy upbringing that failed to teach him responsibility. Todd clement is an attorney representing the victims families. Theres no question that ethan couch was raised in a way where he was taught to avoid responsibility, that he was taught that the rules dont apply to him and his family. I think now that were seeing that indeed they do apply. Millions of americans are bracing for a tragic new year as rain and swollen rivers threaten to burst their banks. The mississippi is poised to crest at or above record levels. Three days of downpours dumped about a foot of rain and led to the death of a dozen people in missouri, oklahoma and arkansas. Several towns have been evacuated. Anna werner is in texas. Reporter the water has surrounded the town where residents were told tuesday its time to leave. We emptied our basement out of anything important. We cleaned out the house of clothes. Reporter as the mississippi iver threatens st. Louis county, it took team work to fill 20,000 sandbags. Officials pleaded for help and the community responded. Just like the movie field of dreams. If you build it, theyll come. Reporter the army corps of engineers is monitoring 19 vulnerable levees on the Rising Mississippi River and tributaries. In the shadow of the gateway arch, the Mighty Mississippi is expected to crest at over 43 feet, close to its second highest level ever. Missouri governor jay nixon water levels in some locations are predicted to exceed the crest of the historic flood of 1993. Reporter nine states saw flooding, 50 people died. Nearly 150 major rivers and tributaries before affected. And the flood waters caused a spectacle. I drove in from kansas just to look at this. 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