NBC Nightly News Full Episode - March 25

>>> TONIGHT, THE. FALLOUT AFTER THE. GROUP CHAT THAT. EXPOSED TOP AMERICAN. OFFICIALS' THINKING. AHEAD OF MILITARY. STRIKES. TOP DEMOCRATS AND. REPUBLICANS DEMANDING. ANSWERS AND CALLING. FOR INVESTIGATIONS AS. THE WHITE HOUSE TRIES. TO DOWNPLAY THE. SIGNIFICANCE. THE PRESIDENT STANDING. BY THE NATIONAL. SECURITY ADVISER, SAYING HE HAS LEARNED. HIS LESSON. BUT TOP INTELLIGENCE. OFFICIALS FACE INTENSE. QUESTIONS ABOUT THE.

LEAK, DISCUSSING PLANS. TO ATTACK HOUTHI. POSITIONS IN YEMEN, WHILE A TOP EDITOR WAS. IN THE TEXT THREAD. SO HOW DID SUCH A. MESSY LAPSE OCCUR? >>> SERIOUS CONCERNS. ABOUT SOCIAL SECURITY. THE NOMINEE FOR. ADMINISTRATOR GRILLED. AS ELON MUSK CALLS IT. A PONZI SCHEME. CAN TRILLS S TRILLIONS. IN CUTS BE MADE. WITHOUT IMPACTING. MILLIONS OF AMERICAN? >>> INSIDE NATO'S DEEP. SEA MISSION TO FEND. OFF RUSSIA FROM. SLASHING CRITICAL.

CABLES THAT CARRY. POWER, DATA, AND A. LIFELINE TO EUROPE. >>> WHY OFFICIALS IN. COSTA RICA SAY THE SON. OF FORMER YANKEES STAR. BRETT GARDNER DIDN'T. DIE OF ASPHYXIATION. WHILE ON VACATION. >>> WHAT MORE PARENTS. ARE CONSIDERING DOING. FOR THEIR KIDS AS. MEASLES CASES RISE. >>> SEEING RED OVER. DYES IN FOOD. THE FIRST STATE TO BAN. MORE THAN SEVEN OF. THEM, AND WHY 20 MORE. STATES AREN'T FAR. BEHIND. >>> AND ALL THE PRETTY. HORSES. HOW ACTOR DARYL HANNAH. AND HER MINIATURE PALS.

ARE MAKING A BIG. IMPRESSION. >> Announcer: THIS IS. "NBC NIGHTLY NEWS". WITH LESTER HOLT. >> GOOD EVENING AND. WELCOME. PRESIDENT TRUMP IS. DOWNPLAYING THE. SECURITY BREACH THAT. INADVERTENTLY LET A. JOURNALIST IN ON A. TEXT THREAT WHERE THAT. REPORTER SAYS IMMINENT. MILITARY ATTACK PLANS. WERE DISCUSSED AMONG. TOP WHITE HOUSE. OFFICIALS. AT A SENATE. INTELLIGENCE HEARING. TODAY WHERE THE.

NATION'S TOP. INTELLIGENCE FIGURES. ARGUE THE CHATS WERE. NOT CLASSIFIED, DESPITE THE FACT THE. REPORTER SAYS AMERICAN. AIR STRIKES AGAINST. HOUTHIS IN YEMEN. PLAYED OUT AS WERE. DISCUSSED. THE TEXT THREAD, USING. THE ENCRYPTED APP. SIGNAL EXPOSED BY THE. EDITOR-IN-CHIEF OF. "THE ATLANTIC". MAGAZINE, WHO WAS. ACCIDENTALLY ADDED TO. THE CHAT BY NATIONAL. SECURITY ADVISER MIKE. WALTZ. TONIGHT THE PRESIDENT. STANDING BY WALTZ AMID. A GROWING DEMOCRATIC. UPROAR, SOME CALLING. FOR FIRINGS.

PETER ALEXANDER IS. COVERING THAT STORY. FOR US TONIGHT. >> Reporter: TONIGHT. FROM DEMOCRATS, DISBELIEF AND DISMAY. >> THIS IS UTTERLY. UNPROFESSIONAL THERE. HAS BEEN NO APOLOGIZE. THERE HAS BEEN NO. RECOGNITION OF THE. GRAVITY OF THIS ERROR. >> Reporter: AS THEY. GRILLED TOP TRUMP. NATIONAL SECURITY. OFFICIALS ABOUT THAT. BLUNDER WHERE A. REPORTER WAS. MISTAKENLY ADDED TO AN. ENCRYPTED GROUP CHAT. ABOUT WHAT THE. REPORTER SAYS WERE. UPCOMING MILITARY. OPERATIONS. >> YOU HAVE TO LEARN. FROM EVERY EXPERIENCE. >> Reporter: WHILE. PRESIDENT TRUMP IS.

DEFENDING HIS NATIONAL. SECURITY ADVISER MIKE. WALTZ, WHO THE. REPORTER SAYS ADDED. HIM TO THAT GROUP. CHAT. >> IS THERE A NEED TO. APOLOGIZE? >> NO, I DON'T THINK. HE SHOULD APOLOGIZE. I THINK HE IS DOING. HIS BEST. >> Reporter: THE. ATLANTIC'S. EDITOR-IN-CHIEF. JEFFREY GOLDBERG SAYS. AMONG THE OFFICIALS ON. THAT CHAT, THE VICE. PRESIDENT, DEFENSE. SECRETARY PETE. HEGSETH, DIRECTOR OF. NATIONAL INTELLIGENCE. TULSI GABBARD, AND CIA. DIRECTOR JOHN RATLIFF, DISCUSSING PLANS FOR. AN ATTACK ON THE. HOUTHIS IN YEMEN. ON TODAY'S HEARING ON.

GLOBAL THREATS, BOTH. GABBARD AND RATCLIFF. DENY ANY. COMMUNICATIONS WAS. CLASSIFIED. >> MY COMMUNICATIONS. WERE ENTIRELY. PERMISSIBLE AND LAWFUL. AND DID NOT INCLUDE. CLASSIFIED. INFORMATION. >> Reporter: DEMOCRATIC MARK WARNER. ARGUING IF THERE WAS. NO CLASSIFIED. INFORMATION, THEY. SHOULD SHARE ALL OF. THE TEXTS. >> THERE WAS NO. CLASSIFIED INFORMATION. SHARED. >> IF THERE WAS NO. CLASSIFIED MATERIAL, SHARE IT WITH THE. COMMITTEE. YOU CAN'T HAVE IT BOTH.

WAYS. THESE ARE IMPORTANT. JOBS. THIS IS OUR NATIONAL. SECURITY. >> Reporter: GOLDBERG. REPORTED THAT TWO. HOURS BEFORE THE U.S. STRIKES ON THE. HOUTHIS, HEGSETH. TEXTED INFORMATION. ABOUT TARGETS, WEAPONS. THE U.S. WOULD BE. DEPLOYING AND ATTACK. SEQUENCING. >> DID THIS. CONVERSATION AT SOME. POINT INCLUDE. INFORMATION ON WEAPONS. PACKAGES, TARGETS, OR. TIMING? >> NOT THAT I'M AWARE. OF. >> DIRECTOR GABBERT,

SAME QUESTION. >> SAME ANSWER, AND. DEFER TO THE. DEPARTMENT OF DEFENSE. ON THAT QUESTION. >> Reporter: FORMER. NATIONAL SECURITY. OFFICIALS SAY DETAILS. OF PLANNED MILITARY. OPERATIONS, INCLUDING. TIMES, TARGETS, AND. WEAPONS ARE BY. DEFINITION CLASSIFIED. RATCLIFFE SAYS SIGNAL, THE ENCRYPTED. COMMERCIAL APP USED IS. LOADED ON MOST CIA. COMPUTERS. >> ONE OF THE THINGS. THAT I WAS BRIEF ON. VERY EARLY, SENATOR, WAS BY THE CIA RECORDS. MANAGEMENT FOLKS ABOUT. THE USE OF SIGNAL AS A. PERMISSIBLE WORK USE.

IT IS. THAT IS A PRACTICE. THAT PRECEDED THE. CURRENT. ADMINISTRATION. >> Reporter: THE. PRESIDENT TONIGHT. DOWNPLAYING THE. INCIDENT. >> THE MAIN THING WAS. NOTHING HAPPENED. THE ATTACK WAS TOTALLY. SUCCESSFUL. IT WAS I GUESS FROM. WHAT I UNDERSTAND TOOK. PLACE DURING, AND IT. WASN'T CLASSIFIED. INFORMATION. >> Reporter: WHILE. ASKING WALTZ TO. INVESTIGATE THE CHAT. HE LED. >> WE ARE LOOKING INTO. AND REVIEWING HOW THE. HECK HE GOT INTO THIS. ROOM. >> Reporter: EARLIER. HEGSETH DISPUTED. GOLDBERG'S REPORTING.

>> NOBODY WAS TEXTING. WAR PLANS. >> THAT'S A LIE. HE WAS TEXTING WAR. PLANS. HE WAS TEXTING ATTACK. PLANS. >> Reporter: TODAY. GOLDBERG SAYING HE. MIGHT GO PUBLIC WITH. MORE OF THE TEXTS. >> WE TAKE NATIONAL. SECURITY INFORMATION. SERIOUSLY. AND MAYBE THERE IS --. MAYBE IN THE COMING. DAY, I'LL BE ABLE TO. LET YOU KNOW. >> Reporter: SOME TOP. TRUMP ALLIES ARE. CRITICIZING THE. EPISODE. >> I DO THINK IT WAS. INCREDIBLY SLOPPY. BUT THAT -- THAT BEING.

SAID, I THINK IT WAS A. MISTAKE. >> Reporter: BUT ALSO. DEFENDING THE. ADMINISTRATION. >> I CAN PROMISE YOU. THIS. WHEN MOMS AND DADS LIE. DOWN TO SLEEP AT NIGHT. AND CAN'T, THIS ISN'T. ON THEIR LIST. THIS ISN'T ON THEIR. LIST. SOMEBODY MADE A. MISTAKE. IT HAPPENS. >> Reporter: DEMOCRATS. TONIGHT ARE CALLING. FOR AN INVESTIGATION. >> THIS SWAMPINESS, THIS INCOMPETENCE, THIS DISRESPECT FOR. OUR INTELLIGENCE. AGENCIES AND THE. PERSONNEL WHO WORK FOR. THEM IS ENTIRELY. UNACCEPTABLE.

. >> AND PETER, WE. UNDERSTAND THE. SENATE'S TOP. REPUBLICAN IS NOW. WEIGHING IN ON THIS? >> LESTER, JOHN THUNE. SAID MISTAKES WERE. MADE AND WANTS TO MAKE. SURE THEY WILL NOT. HAPPEN AGAIN, AND ADDS. THERE WILL LIKELY BE A. SENATE HEARING ON THAT. LEAKED GROUP CHAT. LATE TONIGHT THE HOUSE. DEMOCRAT SAYS PETE. HEGSETH SHOULD BE. FIRED. LESTER? >> PETER, THANK YOU. >>> ON CAPITOL HILL, THE SENATE HELD A. CONFIRMATION HEARING. FOR TO LEAD THE SOCIAL.

SECURITY. ADMINISTRATION. THE AGENCY IS FACING. DEEP CUTS, AND MANY. AMERICANS ARE WORRIED. THAT COULD IMPACT. THEIR BENEFITS. HERE IS RYAN NOBLES. >> Reporter: DENISE. PERISHAK IS A. 73-YEAR-OLD RETIRED. NURSE FROM. PENNSYLVANIA WHO. RELIES EVERY DAY ON. HER CHECK FROM SOCIAL. SECURITY. >> IT'S SOMETHING WE. ALWAYS COUNTED ON. >> Reporter: SHE IS. ONE OF MILLIONS OF. AMERICANS WHO PAID. INTO THE SYSTEM AND. NOW WORRIES ABOUT THE. IMPACT OF POTENTIAL. CHANGES FROM PRESIDENT. TRUMP AND ELON MUSK. >> JUST LOOKING AT. BEING ABLE TO PROVIDE. THREE BASIC MEALS EACH.

OTHER, FOR OURSELVES. BECAUSE IF SOCIAL. SECURITY WERE. ELIMINATED, I CAN'T. EVEN THINK ABOUT HOW. TERRIBLE THAT WOULD. BE. >> Reporter: MUSK HAS. OPENLY ATTACKED SOCIAL. SECURITY. >> SOCIAL SECURITY IS. THE BIGGEST PONZI. SCHEME OF ALL TIME. >> Reporter: ENTER. FRANK BISIGNANO, THE. FORMER CEO OF THE. FINANCIAL SERVICES. COMPANY FISERVE TAPPED. BY TRUMP TO RUN THE. PROGRAM, TODAY. PROMISING NO ONE'S. BENEFITS WILL BE. IMPACTED BESIDES. OFFICE CUTS AND.

CLOSURES. >> ARE YOU CONFIDENT. ENOUGH THAT YOU WILL. PUT ENOUGH PEOPLE BACK. TO WORK SO THEY CAN DO. THE JOB OF DELIVERING. THE BENEFITS THAT. AMERICANS EARNED? YES OR NO. >> I WILL COMMIT TO. HAVING THE RIGHT. STAFFING TO GET THE. JOB DONE. >> Reporter: CONGRESSIONAL. REPUBLICANS ARE ON A. MISSION TO CUT AS MUCH. AS $2 TRILLION IN. FEDERAL SPENDING, A. TASK THAT WON'T BE. EASY WITHOUT IMPACTING. PROGRAMS LIKE SOCIAL. SECURITY. SOME EXPRESSING THEIR. FEARS AT FIERY TOWN. HALLS ACROSS AMERICA. REPUBLICANS INSIST.

THEY PLAN TO FOCUS ON. POTENTIAL WASTE, FRAUD, AND ABUSE, AND. HOPE TO AUTOMATE SOME. SERVICES. >> I DON'T THINK THERE. IS A BUSINESS IN THE. PRIVATE SECTOR THAT IS. PROBABLY OPERATING. WITH THE ANTIQUATED. TYPE OF I.T. SYSTEM. THAT GOVERNMENT. AGENCIES ARE. WHY CAN'T WE UPGRADE. THOSE? >> Reporter: BUT FOR. SENIORS LIKE DENISE, ABRUPT TECH CHANGES. COULD BE A HUGE. CHALLENGE. >> SOCIAL SECURITY AND. MEDICARE COULD SO THIS. BE -- THAT SHOULD. NEVER BE ON THE. CHOPPING BLOCK AT ALL. >> Reporter: AND THERE. ARE REPORTS OF THE. AGENCY'S WEBSITE. CRASHING, AND LONG.

WAITS FOR HELP ON THE. PHONE. A 2024 SURVEY REVEALED. THAT 72% OF AMERICANS. WORRY SOCIAL SECURITY. COULD RUN OUT OF. FUNDING IN THEIR. LIFETIME. LESTER? >> ALL RIGHT, RYAN, THANK YOU. >>> TONIGHT WEST. VIRGINIA HAS BECOME. HE FIRST STATE TO. COMPLETELY BAN FOODS. THAT CONTAINED. ARTIFICIAL FOOD DIE. DYES, ACTING ON. CONCERN THAT THE DYES. POSE A HEALTH RISK. WITH MORE ON THAT, HERE IS COME COSTELLO. >> Reporter: THEY'RE. FOUND IN EVERYTHING. FROM CHIPS AND CANDIES. TO BAKED GOODS, BREAKFAST CEREALS, FRUIT JUICES, EVEN.

MEDICATIONS. FOR DECADES. RESEARCHERS HAVE. WARNED THAT ARTIFICIAL. DYES CAN LEAD TO. SERIOUS BEHAVIORAL. ISSUES IN CHILDREN. WHILE NOT UNIVERSALLY. ACCEPTED, WEST. VIRGINIA HAS BECOME. THE FIRST STATE TO BAN. SEVEN ARTIFICIAL DYES. AND TWO PRESERVATIVES. IN SCHOOLS THIS YEAR. STATEWIDE IN 2028, THE. GOVERNOR WRITING WEST. VIRGINIA RANKS AT THE. BOTTOM OF MANY PUBLIC. HEALTH METRICS, WHICH. IS WHY THERE IS NO. BETTER PLACE TO LEAD. THE MAKE AMERICA. HEALTHY AGAIN MISSION. MARISSA SALON IS NOW. WEANING HER 6-YEAR-OLD. OFF ARTIFICIAL DYES.

>> I WOULD SEE HIM. BOUNCING OFF THE WALLS. AND ACTING WAY OUT OF. HIS CHARACTER, THROWING HUGE TEMPER. TANTRUMS, AND JUST NOT. BEING ABLE TO CONTROL. HIMSELF. AND BEING ABLE TO. CALM DOWN AFTER HE. WOULD EAT THOSE FOODS. >> Reporter: THE EU, AUSTRALIA, AND JAPAN. ALREADY BAN OR. REGULATE ARTIFICIAL. DYES. THE FDA BANNED RED DYE. NUMBER 3 IN JANUARY. A FOOD INDUSTRY TRADE. GROUP SAYS WEST. VIRGINIANS WILL HAVE. LESS ACCESS TO. AFFORDABLE, NUTRITIOUS. AND CONVENIENT FOOD. AND BEVERAGE CHOICES.

MEANWHILE, MORE THAN. 20 OTHER STATES ARE. CONSIDERING SIMILAR. BANS. CALIFORNIA ALREADY. BANS DYES IN SCHOOL. MEALS. MYU NUTRITION EXPERT. MARION NESSEL. >> THESE DYES ARE. THERE FOR COSMETIC. PURPOSES. THEY DON'T HAVE A. HEALTH OR SAFETY. PURPOSE. AND PUBLIC HEALTH. ADVOCATES HAVE WANTED. TO GET RID OF THEM FOR. DECADES. >> Reporter: RESEARCHERS SAY THE. EVIDENCE ISN'T. CONCRETE BECAUSE IT'S. UNETHICAL TO TEST. SOMETHING ON CHILDREN. WHEN YOU ALREADY. BELIEVE IT WILL HURT. THEM. LESTER?

>> TOM COSTELLO, THANK. YOU. >>> TONIGHT, THE WHITE. HOUSE SAYS UKRAINE AND. RUSSIA HAVE AGREED TO. STOP ALL ATTACKS IN. THE BLACK SEA, PART OF. PRESIDENT TRUMP'S. EFFORTS FOR A LARGER. CEASEFIRE TO END THE. WAR. ALL AS WE HAVE AN. EXCLUSIVE LOOK TONIGHT. INSIDE A NATO TRAINING. MISSION TO DEFEND. AGAINST POTENTIAL. RUSSIAN ATTACKS UNDER. WATER. HERE IS RAF SANCHEZ. >> Reporter: ON THE. ICY WATERS OF THE. BALTIC SEA, NATO. WARSHIPS ARE PLAYING A. GAME OF CAT AND MOUSE. WHERE THE RULES ARE. MURKY AND MISTAKES ARE.

HIGH. THIS WAS A TRAINING. EXERCISE. THEIR REAL MISSION, STOPPING ALLEGED. RUSSIAN SABOTAGE. ATTACKS ON UNDERSEA. CABLES THAT SUPPLY. POWER AND DATA TO. EUROPE, AS TONIGHT THE. WHITE HOUSE SAYS. UKRAINE AND RUSSIA. HAVE AGREED TO A. CEASEFIRE AT SEA AS. PART OF U.S. EFFORTS. TO END THE WAR IN. UKRAINE. LAST WEEK, WE EMBARKED. WITH NATO NAVAL PATROL. BALTIC CENTURY. JUST TO GIVE YOU A. SENSE OF HOW. COMPLICATED THIS. WATERWAY, WE'RE. DEPARTING FROM THE. NORTHERN COAST OF. POLAND, A NATO ALLY. BUT JUST A COUPLE OF.

MILES THAT WAY IS THE. RUSSIAN TERRITORY OF. KALININGRAD. ABOVE THE SURFACE, YOU. HAVE MERCHANT VESSELS, YOU HAVE MILITARY. SHIPS LIKE THIS ONE. BUT BELOW THE WATER, YOU HAVE THOSE. CRITICAL UNDERSEA. CABLES. ON CHRISTMAS DAY, THIS. TANKER SET SAIL FROM. RUSSIA, CROSSING THE. BALTIC, BUT DRAGGING. ITS ANCHOR ON THE. SEABED, SLASHING FOUR. UNDERWATER CABLES. ACCORDING TO FINLAND. UNTIL COMMANDOS. BOARDED THE SHIP AND. ARRESTED THE CREW. >> AN ANCHOR IS NOT.

MADE TO DRAG OVER THE. SEABED. >> Reporter: SO IN. YOUR JUDGMENT, COULD. THIS HAVE BEEN AN. ACCIDENT? >> NOT IN MY FIELD. >> Reporter: RUSSIA. DENIES INVOLVEMENT, BUT FINLAND SAYS THE. SHIP IS LIKELY PART OF. THE SHADOW FLEET, MERCHANT CRAFT. OPERATING UNDER ORDERS. FROM THE KREMLIN. NATO NOW DEPLOYING. UNDERWATER DRONES TO. CHECK CABLES FOR SIGNS. OF DAMAGE. IT COMES AS PRESIDENT. TRUMP HAS SAID EUROPE. NEEDS TO SPEND MORE ON. ITS OWN DEFENSE. INSTEAD OF RELYING ON. THE U.S. IN SOME WAYS, THIS. MISSION IS EXACTLY THE.

MODEL THAT THE TRUMP. ADMINISTRATION WANTS. ALL THE SHIPS HERE ARE. EUROPEAN. AND YOU FEEL YOU CAN. STILL RELY ON THE. UNITED STATES? >> I DO. I ABSOLUTELY DO. WE ARE STILL NATO. >> Reporter: THESE. UNCERTAIN WATERS NOW. THE FRONT LINES OF A. SHADOWY CONFLICT. RAF SANCHEZ, NBC NEWS, THE BALTIC SEA. >>> IN 60 SECONDS, WITH THE RISING. CONCERN AMONG PARENTS. ABOUT WHAT TO DO WITH. THEIR IN.

>>> AS MEASLES. OUTBREAKS ARE BEING. REPORTED AROUND THE. COUNTRY, IN TEXAS, THE. NUMBER OF CASES HAS. BALLOONED TO 330 SINCE. JANUARY. EMILIE IKEDA NOW WITH. HOW TO MAKE SURE THE. YOUNGEST CHILDREN ARE. KEPT SAFE IN ANOTHER. IMPORTANT HEALTH. ALERT. >> DO YOU WANT MORE. RASPBERRIES? >> Reporter: DAWN. GIBSON AND CARLIA HAVE. BEEN LOOKING FORWARD. TO THEIR FIRST. VACATION AS A FAMILY. OF FOUR NEXT MONTH, UNTIL MOUNTING MEASLES. CASES THWARTED THEIR. PLANS TO ATTEND A. WEDDING IN TEXAS, WHERE THE HEALTH.

DEPARTMENT ANNOUNCED. CASES CLIMBED TO 327. >> IT'S ONE MORE THING. WE HAVE TO WORRY ABOUT. AS PARENTS. >> Reporter: THEY. DON'T FEEL COMFORTABLE. FLYING FROM CALIFORNIA. WITH 4-MONTH-OLD KAI, TOO YOUNG TO GET THE. MMR VACCINE. WHAT WAS THE TIPPING. POINT FOR YOU GUYS? >> THE CASES SADLY. KEPT GROWING. THEY WERE SHOWING UP. IN DIFFERENT STATES. WE KIND OF HAD THAT. ANXIETY, IS THIS GOING. AWAY. >> Reporter: THAT. ANXIETY IS SHARED BY. PARENTS ACROSS THE. COUNTRY, WITH MEASLES. CASES NOW CONFIRMED IN. 19 STATES, INCLUDING. NEW YORK, WHERE DR.

SOPHIA JAN IS A. PEDIATRICIAN. ARE YOU HEARING. CONCERN FROM PARENTS. HERE IN NEW YORK? >> ABSOLUTELY. THEY'RE WORRIED ABOUT. WHAT HAPPENS IF THEY. TRAVEL. THEY'RE WORRIED ABOUT. TRAVELERS COMING TO. NEW YORK. >> Reporter: THE CDC. RECOMMENDS CHILDREN. GET A FIRST DOSE OF. THE MEASLES VACCINE. BETWEEN 12 AND 15. MONTHS, AND THE SECOND. BETWEEN 4 AND 6 YEARS. BUT MORE PEDIATRICIANS. ARE ENCOURAGING AN. EXTRA EARLIER DOSE AT. 6 MONTHS, NOT JUST. AHEAD OF INTERNATIONAL. TRAVEL, BUT NOW IN. SOME INSTANCES, AHEAD.

OF DOMESTIC TRIPS OR. IN AREAS WITH EMERGING. CASES. DR. JAN SAYS IT'S. IMPORTANT TO TALK TO. YOUR DOCTOR. >> WE ARE IN A NEW ERA. OF THE FIGHT AGAINST. MEASLES. >> Reporter: MEASLES. IS ONE OF THE MOST. CONTAGIOUS VIRUSS IN. THE WORLD AND CAN LIVE. IN THE AIR FOR TWO. HOURS. BACK IN CALIFORNIA, KAI'S FAMILY IS. PRESSING PAUSE ON. TRAVEL UNTIL HE CAN. GET THE SHOT. >> IT'S JUST SO. CONTAGIOUS THAT WE. DON'T WANT TO TAKE ANY. UNNECESSARY RISKS. >> EMILIE IS HERE. TYPICALLY THE SECOND.

VOSE OF THE MMR. VACCINE IS GIVEN. BETWEEN 4 AND 6. IS THERE SOME. FLEXIBILITY IN THAT. TIMING? >> SO THE CDC SAYS. CHILDREN CAN RECEIVE. THAT SECOND DOSE. EARLIER. SO LONG AS IT COMES AT. LEAST 28 DAYS AFTER. THE FIRST SHOT, DOCTORS WILL HELP. WEIGH WHETHER THAT IS. APPROPRIATE. AND, LESTER, TWO DOSES. OF THIS VACCINE, 97%. EFFECTIVE. >> ALL RIGHT, EMILIE, THANKS FOR THAT. >>> WE'RE BACK IN A. MOMENT WITH NEW. DETAILS OF THE DEATH. OF BRETT GARDNER'S. TEEN SON. >>> PLUS, THE. ATTEMPTED MURDER CASE. IN HAWAII. >>> NEW DEVELOPMENTS.

TONIGHT IN THE DEATH. OF A TEENAGER IN COSTA. RICA. FORMER YANKEES STAR. BRETT GARDNER SAYS HIS. 14-YEAR-OLD SON GOT. SICK AND DIED IN HIS. SLEEP DURING A FAMILY. VACATION IN COSTA. RICA. AUTHORITIES THERE. TONIGHT REVERSING A. PRELIMINARY CAUSE OF. DEATH, SAYING HIS. AIRWAY WAS NOT. OBSTRUCTED AS. PREVIOUSLY SUSPECTED. OFFICIAL AUTOPSY. RESULTS ARE PENDING.

>>> TONIGHT HAWAII. OFFICIALS HAVE. ARRESTED A DOCTOR WHO. ALLEGEDLY TRIED TO. KILL HIS WIFE ON A. HAWAIIAN HIKING TRAIL. >> Reporter: TONIGHT, A PICTURE-PERFECT. AFTER A DOCTOR. ATTACKED HIS OWN WIFE, PUSHING HER OFF A. CLIFF. GERHARDT KONIG WAS. HIKING THE PALI TRAIL. WITH HIS WIFE WHEN HE. STRUCK HER IN THE HEAD. WITH A ROCK AND TRIED. TO PUSH HER OFF A. LEDGE. POLICE SAY THE ATTACK.

HAPPENED AROUND 10:00. A.M. ON MONDAY. THE COUPLE WAS. VISITING THE TOURIST. SITE LOCATED JUST. OUTSIDE HONOLULU. SHE WAS TAKEN TO A. LOCAL HOSPITAL WITH. INJURIES TO THE HEAD. AND FACE WHERE POLICE. SAY SHE REMAINS IN. CRITICAL CONDITION. SOON AFTER POLICE. RELEASED THIS SMILING. PHOTO OF KONIG, AN. ANSWER. ANESTHESIOLOGIST. >> IT WAS FLYING. PRETTY CLOSE TO THE. MOUNTAINS. >> Reporter: AFTER A. DAY-LONG MANHUNT, HAWAII POLICE. CONFIRMED THEY.

ARRESTED KONIG AFTER. CHASING HIM ON FOOT. MAUI HEALTH SAY AFTER. BEING MADE AWARE OF. THE ALLEGATIONS. AGAINST DR. KONIG, HE. WAS SUSPENDED FROM THE. MEDICAL STAFF PENDING. INVESTIGATION. THE HOSPITAL ADDING. THEY TAKE CONCERNS THE. SAFETY OF ITS PATIENTS. VERY SERIOUSLY AND. WILL COOPERATE WITH. AUTHORITIES AS. APPROPRIATE. TONIGHT, HE IS BEING. HELD BEHIND BARS. CRIMINAL CHARGES ARE. PENDING. MARISSA PARRA, NBC. NEWS. >>> WHEN WE COME BACK, A STORY NOT TO BE. MISSED. WE CATCH UP WITH ACTOR. DARYL HANNAH AND THE.

GOOD NEWS TONIGHT. ABOUT HER. >>> OH, GOD. WOO. >> HOW ARE WE DOING? >> I DON'T KNOW WHAT. THAT IS.

>> THAT IS --. >> AROUND HIS LEG OR. SOMETHING LIKE THAT? >>> IMPROVING THE. QUALITY OF LIFE FOR. SENIORS. OUR STEVE PATTERSON. HAS THAT STORY. >> Reporter: IF LED JOY HAD I. OWN DISTINCT RHYTHM, FOLKS HERE MIGHT SAY. IT SOUNDS SOMETHING. LIKE THIS. >> YOU'RE CUTE! RECORDS MEET ZIGGY AND. ROMEO. BY FAR THIS PAIR OF. HORSES ARE THE TWO. BIGGEST STARS TO TROT.

EVER THROUGH SENIOR. CONCERNS ADULT DAY. CARE, OFFERING PLENTY. OF SENIOR PETS AND. LOTS OF UNCONDITIONAL. LOVE. >> YOU'RE MY BEST. FRIEND! >> Reporter: AND FOLKS. HERE AREN'T AFRAID TO. ADMIT THEY NEED IT. >> THIS IS FANTASTIC. FOR ME. >> Reporter: THE TRUTH. IS MANY COME TO THE. DAY CARE SUFFERING. FROM THE MALADIES OF A. LIFE-LONG MARCH, THINGS LIKE. ALZHEIMER'S AND. DEMENTIA, WHERE. LONELINESS ONLY MAKES. THINGS WORSE. >> SOCIAL ISOLATION. FOR OLDER ADULTS IS. INCREDIBLY DAMAGING. WE SEE AMAZING. BENEFITS FOR. SOCIALIZATION FOR.

PEOPLE WITH MEANT. THIA. >> IT'S YOUR FRIEND. >> Reporter: AND IF. THAT COWGIRL HANDLER. LOOKS FAMILIAR, THAT'S. BECAUSE IT'S DARYL. HANNAH, CAST IN A ROLE. SHE HAS COME TO ADORE, CAREGIVER. >> THE FIRST COUPLE OF. TIMES I CAME OUT, I. WAS IN TEARS BECAUSE. SOME OF THE PEOPLE. ACTUALLY CRIED. PEOPLE HAD THEIR. MEMORIES COME BACK TO. THEM. THEY TALK ABOUT WHEN. THEY HAD HORSES IN. WORLD WAR II, OR THEY. HAD A MULE HEN THEY. WERE A LITTLE BOY. >> Reporter: DARYL HAS.

BEEN COMING TO THE DAY. CARE FOR NEARLY A YEAR. NOW. >> THEY JUST TOLD US. TODAY, THIS IS THE. HIGHLIGHT OF. EVERYONE'S MONTH WHEN. YOU COME HERE. >> Reporter: THAT MUST. FEEL PRETTY GOOD. >> YEAH, IT'S GREAT. >> Reporter: FOLKS. LIKE MIKE SAY THESE. ARE THE BEST DAYS. >> YOU'RE PLAYING WITH. ANIMALS, AND YOUR MIND. IS GOING. YOU'RE SMILING. YOU'RE HAVING A GOOD. DAY. >> Reporter: SHOWING. UP, SHARING LOVE. >> GIVE ME A KISS! >> Reporter: SOMETIMES. THE BEST CARE IS THE. SIMPLE ACT OF BEING. THERE. >> AW, LOOK, HE IS.

SMILING. >> Reporter: STEVE. PATTERSON, NBC NEWS, THOUSAND OAKS, CALIFORNIA. >>> AND THAT IS. "NIGHTLY NEWS" FOR. THIS TUESDAY. THANK YOU FOR. WATCHING. I'M LESTER HOLT. PLEASE TAKE CARE OF. YOURSELF AND EACH. OTHER. GOOD NIGHT.