TEST. TEST TEST TEST. TEST TEST >>> TONIGHT, MAJOR FALLOUT AFTER THAT NEAR REBELLION IN MOSCOW, WITH MERCENARIES THREATENING TO OVERTHROW PARTS OF VLADIMIR PUTIN'S GOVERNMENT. THOSE ARMED FIGHTERS NOW PULLING OUT OF THE CITIES THEY'VE TAKEN INSIDE RUSSIA, AS OUR REPORTER GETS INSIDE MOSCOW, A CITY THAT WAS BRACING FOR BATTLE JUST HOURS AGO. TONIGHT NEW DETAILS ON THE CHAOS THAT ALMOST BROUGHT THE COUNTRY TO CIVIL WAR, AND WHAT IT MEANS FOR PUTIN'S GRIP ON POWER. >> WE'VE SEEN MORE CRACKS EMERGE IN THE RUSSIAN FACADE. >>> TORNADOES TOUCHING DOWN IN INDIANA LATE TODAY WITH A DEADLY HEATWAVE IN TEXAS TURNING DANGEROUS. ONE TEENAGER NOW DEAD WITH TEMPERATURES FEELING LIKE 120. PLUS, HOW 12 PEOPLE TRYING TO COOL DOWN IN THIS LAZY RIVER ENDED UP IN THE HOSPITAL. >> THE SEVERAL CHILDREN HAVING TROUBLE BREATHING. >>> THE NEW INVESTIGATION JUST ANNOUNCED BY THE COAST GUARD INTO THAT DOOMED "TITANIC" SUB, AND WHO THEY SAY WILL PAY FOR EVERYTHING. >>> DRAMATIC BODY COVERAGE FOOTAGE SHOWING THE MOMENTS BEFORE THREE SAN ANTONIO POLICE OFFICERS KILLED A WOMAN AT HER OWN HOME. BOARD A ROYAL CARIBBEAN CRUISE. THE FREAK STORM SENDING CHAIRS FLYING AND PASSENGERS SLIDING. >> THIS IS "NBC NIGHTLY NEWS" WITH KATE SNOW. >> GOOD EVENING. I'M HALLIE JACKSON IN FOR KATE SNOW. WE BEGIN TONIGHT WITH THE SHOCK AND THE UNCERTAINTY NOW AROUND THE WORLD AFTER MERCENARY REBELS CALLED OFF THEIR MARCH ON MOSCOW, ENDING THE BIGGEST THREAT TO THE KREMLIN'S POWER IN DECADES. THIS JUST DOESN'T HAPPEN IN VLADIMIR PUTIN'S RUSSIA, NOT LATELY. WHILE HE HAS FEND OFF AN UPRISING NOW, THERE ARE MANY QUESTIONS ABOUT HIS GRIP ON POWER AND WHAT IT MEANS FOR PUTIN'S WAR IN UKRAINE. PRESIDENT BIDEN SPEAKING LATE TODAY WITH THE UKRAINIAN PRESIDENT AND HUDDLING WITH HIS OWN TOP ADVISERS AS WE LEARN NEW DETAILS ABOUT WHAT THE U.S. KNEW AND WHEN. WORLD LEADERS ARE JUST BEGINNING TO SIFT THROUGH THE FALLOUT OF THIS REVOLT, ONE THAT AND IT WAS ON THE BRINK OF CHAOS. HALLIE? >> OUR KEIR SIMMONS IN MOSCOW FOR US TONIGHT. KEIR, THANK YOU. >>> BACK HERE AT HOME, THAT BRUTAL UNRELENTING HEATWAVE IN TEXAS HAS NOW TURNED DEADLY AFTER A TEENAGER DIED. THE TEMPERATURES TODAY FELT LIKE 120 DEGREES IN SOME SPOTS WHILE IN THE MIDWEST, WE'RE TRACKING REPORTS OF TORNADOES THAT HIT LATE TODAY. PRISCILLA THOMPSON REPORTS FROM HOUSTON. >> Reporter: THAT IS A TORNADO. I AM GETTING THE [ BLEEP ] OUT OF HERE. >> Reporter: TONIGHT THERE IS A THREAT OF A TORNADO OUTBREAK WITH ONE BEING SPOTTED JUST SOUTH OF INDIANAPOLIS. IT COMES WITH TEMPERATURES IN THE SOUTH HITTING HISTORIC TRIPLE-DIGITS FOR THE THIRD WEEK IN A ROW. SOME SPOTS REACHING MORE THAN A SCORCHING 110 DEGREES. FROM TEXAS -- >> THIS YEAR IT FEELS HOTTER THAN REGULAR. >> Reporter: -- TO LOUISIANA. >> WE'VE GOT HEAT ADVISORIES AND THE HEAT HAS EXPANDED ALL THE WAY UP TO MEMPHIS. >> Reporter: MORE THAN 40 MILLION AMERICANS ARE UNDER HEAT ALERTS DURING AN UNRELENTING HEATWAVE THAT'S NOW TURNING DEADLY. AT BIG BEND NATIONAL PARK, OFFICIALS SAY A 14-YEAR-OLD BOY DIED AFTER PASSING OUT WHILE HIKING IN 119-DEGREE HEAT. THE BOY'S STEPFATHER RACING TO GET HELP, WAS TRAGICALLY KILLED IN A CAR CRASH, ACCORDING TO THE NATIONAL PARK SERVICE. BOTH DEATHS ARE UNDER INVESTIGATION. >> WE HAVE MULTIPLE PATIENTS. >> Reporter: AND IN HOUSTON, A DOZEN PEOPLE TRYING TO COOL OFF FROM THE BRUTAL HEAT WERE RUSHED TO THE HOSPITAL SATURDAY AFTER GETTING SICK AT A LAZY RIVER POOL FROM POSSIBLE CHLORINE POISONING. >> THERE ARE SEVERAL CHILDREN HAVING TROUBLE BREATHING, POOL INGESTED CHLORINE. >> Reporter: THE POOL AUTHORITY DECLINING TO COMMENT. NOW WITH MORE BLISTERING HEATON WAY, THE TEXAS POWER GRID IS BEING PUSHED TO ITS LIMITS. ITS OPERATOR, ERCOT, ISSUING A WEATHER WATCH ALL THE WAY THROUGH FRIDAY, BRACING FOR RECORD-BREAKING DEMAND. AS PEOPLE TRY TO BEAT THE HEAT ANY WAY THEY CAN. PRISCILLA IS JOINING US NOW FROM HOUSTON. PRISCILLA, WHEN ARE PEOPLE THERE GOING TO CATCH A BREAK? >> HALLIE, NOT ANY TIME SOON. WE'RE ON TRACK TO SEE MORE THAN 80 TEMPERATURE RECORDS SHATTERED THIS WEEK ACROSS THE SOUTHWEST AND CENTRAL PLAINS, WITH TEMPERATURES ON TRACK TO REACH MORE THAN 112 DEGREES. HALLIE? >> PRISCILLA THOMPSON, WHERE FOLKS ARE COOLING TLAUF IN HOUSTON. PRISCILLA, THANK YOU. >>> TO BOSTON NOW, WHERE THE COAST GUARD IS REVEALING NEW DETAILS TONIGHT ABOUT THE INVESTIGATION INTO THAT SUB THAT IMPLODED WHILE EXPLORING THE "TITANIC" JESSE KIRSCH HAS THE LATE E. >> Reporter: TONIGHT THE U.S. COAST GUARD SAYS THE TITAN SUBMERSIBLE RESCUE EFFORTS ARE OFFICIALLY OVER. NOW THE COAST GUARD SAYS IT'S CONVENED A MARINE BOARD OF INVESTIGATION WORKING WITH INTERNATIONAL PARTNERS TO FIGURE OUT WHAT WENT WRONG, KILLING ALL FIVE MEN ON BOARD TITAN. THE BOARD WILL FIRST AND PRIMARILY WORK TO DETERMINE THE CAUSE OF THIS MARINE CASUALTY AND THE FIVE ASSOCIATED DEATHS. AND IT CAN MAKE RECOMMENDATIONS TO THE PROPER AUTHORITIES TO PURSUE CIVIL OR CRIMINAL SANCTIONS AS NECESSARY. >> Reporter: THE MILITARY DISCUSSING THE COST OF ITS EFFORTS TOO. >> THE COAST GUARD DOESN'T CHARGE FOR SEARCH AND RESCUE, NOR DO WE ASSOCIATE A COST WITH HUMAN LIFE. WE ALWAYS ANSWER THE CALL. >> Reporter: TONIGHT OCEANGATE SPOKESPERSON TELLS NBC NEWS THE COMPANY HAS, QUOTE, NO ADDITIONAL INFORMATION TO SHARE AT THIS TIME. ALSO NEW TONIGHT, A CLOSER LOOK AT THE ONGOING RECOVERY OPERATION. PELAGIC RESEARCH SERVICES SHARING THESE PHOTOS AT ITS REMOTELY OPERATED VEHICLE ODISIOUS FROM TODAY DAY'S DIVE, CALL IT REMARKABLY DIFFICULT AND RISKY CHALLENGED BY ENVIRONMENTAL STRESSES. TITAN WENT MISSING LAST SUNDAY ON ITS DESCENT TO THE "TITANIC" SHIPWRECK. ON THURSDAY OFFICIALS ANNOUNCED THE DISCOVERY OF SUBMERSIBLE DEBRIS NEAR "TITANIC'S" BOW SAYING IT APPEARS TO HAVE ENDED IN A CATASTROPHIC IMPLOSION. NOW INVESTIGATORS ARE LOOKING INTO VOICE RECORDERS FROM TITAN'S MOTHER SHIP WITH THE SUBMERSIBLE'S EXPERIMENTAL DESIGN COMING UNDER GROWING CONTROVERSY. STILL NO DEFINITIVE ANSWER ON HOW ADVENTURE BECAME TRAGEDY. JESSE KIRSCH, NBC NEWS. >>> NEW BODY CAMERA VIDEO FROM SAN ANTONIO SHOWS THE FINAL MOMENTS BEFORE POLICE SHOT AND KILLED A WOMAN IN HER OWN HOME. THREE OFFICERS NOW CHARGED WITH MURDER, AND A WARNING HERE, SOME OF THE VIDEO YOU'RE ABOUT TO SEE IS DISTURBING. DANA GRIFFIN HAS MORE. >> Reporter: THREE SAN ANTONIO POLICE OFFICERS HAVE BEEN CHARGED WITH MURDER AND SUSPENDED WITHOUT PAY AFTER KILLING A WOMAN ARMED WITH A HAMMER INSIDE HER OWN APARTMENT. >> HEY, LADY, GET OVER HERE. >> Reporter: JUST AFTER MIDNIGHT FRIDAY, OFFICERS WERE RESPONDING TO A VANDALISM CALL. >> GET OVER HERE. >> Reporter: 46-YEAR-OLD MELISSA PEREZ WAS SUSPECTED OF CUTTING WIRES TO A FIRE ALARM SYSTEM. POLICE FOLLOWED PEREZ TO HER FIRST FLOOR APARTMENT WHERE THEY SAY SHE LOCKED HERSELF INSIDE. AN OFFICER REMOVES THE SCREEN TO HER OPEN WINDOW. PEREZ HITS THE OFFICER WITH WHAT APPEARS TO BE A GLASS CANDLE. >> YOU'RE GOING GET SHOT. >> EXCUSE ME. >> Reporter: HERE IS A WIDER ANGLE OF THE CONFRONTATION. >> HEY, HEY, WATCH OUT! [ GUNSHOTS ] >> Reporter: THEY SAY PEREZ THEN SWUNG A HAMMER, SHATTERING THE WINDOW. OFFICER THENCE FIRED THE DEADLY SHOTS. ACCORDING TO POLICE, PEREZ WAS HIT AT LEAST TWICE. PARAMEDICS PRONOUNCED HER DEAD AT THE SCENE. >> IT APPEARED THAT MS. PEREZ WAS HAVING A MENTAL HEALTH CRISIS. >> Reporter: THE POLICE CHIEF ADDING THE OFFICERS' ACTIONS WERE NOT CONSISTENT WITH POLICY AND TRAINING. SERGEANT ALFRED FLORES AND OFFICERS ELEAZAR ALEJANDROS WERE SUSPENDED WITHOUT PAY AND LATER ARRESTED ON MURDER CHARGES. ACCORDING TO COURT DOCUMENTS, THEY HAVE SINCE BEEN RELEASED ON BOND. >> HEARTBROKEN. THERE IS NO WORDS THAT CAN EXPRESS THE HURT THIS INCIDENT CAUSE MID FAMILY. >> Reporter: THE POLICE CHIEF VOWINGROM A CRU SHIP. VIOLENT WINDS SENDING PASSENGERS RUNNING FOR THEIR LIVES. >>> PLUS, A MYSTERY IN THE OCEAN. WHAT IS KILLINGW OVER A SUNNY SUMMER VACATION. GUAD VENEGAS, NBC NEWS, MIAMI. >>> TO THE WEST COAST NOW AND A MYSTERY IN THE OCEAN. WHAT IS KILLING HUNDREDS OF DOLPHINS AND SEALS OFF THE CALIFORNIA COAST? EXPERTS NOW GETTING WORRIED IT COULD HAVE AN IMPACT ON THE SEAFOOD WE EAT. STEVE PATTERSON HAS MORE. >> Reporter: THE BEAUTY OF A CALIFORNIA BEACH DAY BROKEN BY THE STARTLING SIGHT OF SICKNESS AND DEATH. >> IT HAS BEEN QUITE AWFUL. WE'VE BEEN SEEING AT LEAST TWO OR THREE OF THEM WASH UP EVERY EVENING. >> Reporter: SCIENTISTS CALL IT A MICROSCOPIC MENACE, TOXIC ALGAE BLOOM POISONING THE CALIFORNIA COAST. >> TOXINS BUILD UP IN THEIR SYSTEM AND CAN LEAD TO ALL SORTS OF ISSUES. >> Reporter: ALONG THE SOUTHERN CALIFORNIA COAST, OFFICIALS ESTIMATE MORE THAN A THOUSAND CALLS FOR SEA LIONS AND DOLPHINS EITHER DEAD OR SHOWING SIGNS OF SICKNESS. >> IT AFFECTS THE BRAINS AND THE HEART, CAN LEAD TO SEIZURES, CAN LEAD TO DISORIENTATION, AGGRESSION AS WELL AS MISCARRIAGES AND DEATH. >> Reporter: BIOLOGISTS SAY IT'S LIKELY A TOXIC ALGAE BLOOM WHICH CAN BE EATEN BY SMALL SEA CREATURES AND CONSUMED INTO TURNED INTO A NEUROTOXIN WHEN EATEN BY LARGER CREATURES. BEHIND ME ANOTHER DOLPHIN WASHED UP ON SHORE. RESEARCHERS COLLECTING MEASUREMENTS, COLLECTING SAMPLES AND WAITING FOR TEST RESULTS TO FIND OUT IF IT IS THIS ALGAE, AND IF IT IS, IT'S MORE THAN WILDLIFE AT RISK. THE CALIFORNIA DEPARTMENT OF HEALTH WARNING AGAINST EATING SPORT HARVESTED MUSCLE MUSSELS, CLAMS OR SCALLOPS. >> I'VE NEVER SEEN ANYTHING LIKE THIS. THIS IS THE LARGE PULSE OF ANIMALS WE'VE HAD AT LEAST ON THE MARINE MAMMAL SIDE. >> Reporter: SCIENTISTS SCRAMBLING FOR ANSWERS WITH WILDLIFE RESCUE EFFORTS AROUND THE CLOCK. STEVE PATTERSON, NBC NEWS. >> WE'RE BACK IN A MOMENT WITH CONCERNS SOMETHING TOXIC MAY HAVE ENDED UP IN THE YELLOWSTONE RIVER AFTER ANOTHER TRAIN DERAILMENT. >>> PLUS, MALLS ARE GETTING CREATIVE TO STAY AL >>> WE ARE BACK WITH NEW CONCERNS ABOUT A POSSIBLE TOXIC SPILL IN THE YELLOWSTONE RIVER AFTER A TRAIN DERAILED AND A BRIDGE COLLAPSED IN MONTANA. TAKE A LOOK. THIS TRAIN FELL INTO THE RIVER SATURDAY. AND WHILE NOBODY WAS REPORTED TO BE HURT, THE COMPANY THAT OPERATES IT SAYS CERTAIN CARS CARRYING MOLTEN SULFUR AND ASPHALT MAY HAVE BEEN COMPROMISED. >>> IT'S BEEN A CRISIS FOR MALLS AROUND THE COUNTRY, BUT SOME OF THEM ARE GETTING BIG MAKEOVERS TO STAY OPEN. MEANING THE MALLS OF TODAY LOOK A LOT DIFFERENT THAN THE MALLS WE GREW UP. WITH BRIAN CHEUNG HAS A CLOSER LOOK. >> Reporter: IT'S A WILD THOUGHT. COME TO THE WESTFIELD MALL IN INDIANAPOLIS LOOKING FOR SHOES, AND YOU MIGHT LEAVE WITH A NEW FELINE FRIEND OR TWO. >> THEY'RE BONDED. SO YOU NEED TO TAKE BOTH OF THEM. >> IT'S A PACKAGE DEAL. >> THAT'S RIGHT. >> Reporter: KELLY BROWN HELPED OPEN NOT A PET STORE, BUT AN ANIMAL SHELTER AT THE MALL DURING THE PANDEMIC. SINCE THEN PAWS AT THE MALL HAS FOUND HOMES FOR SOME 1600 ANIMAL RESCUES. >> WHEN YOU WALK BY THERE MIGHT BE THAT ONE SPECIAL ANIMAL THAT CATCHES YOUR EYE. >> Reporter: THE STORES LOVE IT TOO. FOOT TRAFFIC ON THIS SIDE OF THE MALL HAS JUMPED 10% SINCE THEY MOVED IN. THEY'RE PAYING RENT AND FILLING EMPTY SPACE. THE ANIMAL SHELTER IS WHAT USED TO BE A CLOTHING BRAND QUICKSILVER LOCATION AND IT'S RIGHT ACROSS FROM WHAT USED TO BE A LIBRARY, AN AMERICAN EAGLE. IT'S NOT A BOOKSTORE, BUT PUBLIC LIBRARY. THERE ARE BOOKS FOR ALL AGES, TOYS AND PLAY SPACES FOR THE KIDS TOO. >> A LOT OF TOY STORES ARE CLOSING. I THINK HAVING A PUBLIC COUNTY LIBRARY COME IN HAS REVITALIZED THIS MALL SPECIFICALLY. >> Reporter: BRANCH MANAGER RACHEL MEYERS SAYS IT GOES BOTH WAYS. >> THEY'RE COMING TO THE MALL FOR SO MANY OTHER THINGS, AND THEY'RE BECOMING LIBRARY USERS ALL THE TIME. AND THAT'S REALLY WHAT WE WANT IS CREATING MORE LIBRARY CUSTOMERS. >> Reporter: NATIONWIDE, ABOUT A TENTH OF MALL SPACE IS CURRENTLY EMPTY. SO THEY'RE TURNING TO UNCONVENTIONAL SOLUTIONS. THE FUTURE COULD LOOK LIKE MAIN STREET, BUT INSIDE SAID EXPERT ALEXANDER LANGE. >> YOU'RE GOING SEE A LOT MORE ENTERTAINMENT BUSINESSES, MOVIE THEATERS, VR THEATER, TRAMPOLINE PARKS, MAYBE PICKLEBALL, CLIMBING WALLS, OTHER ACTIVE USES. >> Reporter: IT'S HAPPENING ALREADY. IN NEW JERSEY, A BURLINGTON COAT FACTORY IS NOW A PICKLEBALL COURT. AND IN IDAHO, THE OLD SEAR'S DEPARTMENT STORE IS NOW A CHARTER SCHOOL. THE AUTO SHOP TURNED INTO A BASKETBALL COURT. ALL OF IT SEAMLESSLY EMBEDDED INSIDE THE GRAND TETON MALL. >> I THINK REALLY THE WAY TO THINK ABOUT THE MALL OF THE FUTURE IS WHAT THINGS MAKE PEOPLE LEAVE THEIR HOUSES? >> Reporter: BROWN SAYS SHE'S FIELDING CALLS FROM OTHER SHELTERS AROUND THE COUNTRY. THEY WANT TO TRY THE MALL TOO. >> IT'S A WIN FOR THE MALL. IT'S A WIN FOR US AND ESPECIALLY FOR THE ANIMALS. >> Reporter: AN ADORABLE SOLUTION THAT ANYONE COULD GET BEHIND. BRIAN CHEUNG, NBC NEWS ANNAPOLIS. >>> WHEN WE COME BACK, THERE IS GOOD NEWS TONIGHT ABOUT WHY A >>> THERE IS GOOD NEWS TONIGHT ABOUT SECOND CHANCES AND THE LOVE SURROUNDING ONE WOMAN THROUGH THE FIGHT OF HER LIFE. A SHORT WALK DOWN THE AISLE FOR SHERI SHAW JANE -- >> I KNEW YOU COULD BE THE MAN THAT COULD BE MY BEST FRIEND. >> Reporter: BUT A LONG ROAD TO GET THERE AFTER BEING DIAGNOSED WITH STAGE 3 SQUAMOUS CELL CANCER IN 2021. SHE GOT THE NEWS ONLY ABOUT A YEAR AFTER SHE AND BILL JAMES STARTED DATING, NEVER EXPECTING HE WOULD STICK BY HER SIDE. >> BUT HE DIDN'T LEAVE. >> NOPE. >> HE CAME WITH ME TO HOUSTON, TOOK ME EVERY DAY TO M.D. ANDERSON. >> EARLY. >> AND IT STARTED TO TURN TO LOVE. >> YEAH, IT BLOSSOMED INTO LOVE. >> Reporter: LOVE THAT CARRIED THE COUPLE THROUGH GRUELING ROUND AFTER ROUND OF CHEMOTHERAPY AND RADIATION, UNTIL FINALLY -- >> I'M CANCER-FREE! >> Reporter: AFTER AN INSTANT YES WHEN BILL PROPOSED, THE TWO MARRIED EARLIER THIS MONTH IN NORTH CAROLINA. SOME OF THE MOST SPECIAL GUESTS NOT IN THE AUDIENCE, BUT BY SHERI'S SIDE. YOU HAD A WEDDING, AND YOU HAD SPECIAL PEOPLE WALK YOU DOWN THE I'LL. >> DR. MORRIS AND DR. HOLIDAY TELL ME AT MY CHECKUPS WE DO WHAT WE DO BECAUSE WE GIVE PEOPLE ANOTHER LIFE. I WOULDN'T HAVE EVEN BEEN AROUND TO MARRY HIM IF NOT FOR THEM. >> Reporter: DRS. VAN MORRIS AND EMMA HOLIDAY FROM M.D. ANDERSON CANCER CENTER TREATED SHERI AS SHE BATTLED HER CANCER, SEEING FIRSTHAND HER FIGHTING SPIRIT AND HER BLOSSOMING RELATIONSHIP WITH BILL. YOU GET INVITED TO THIS WEDDING. THAT MUST HAVE BEEN A MOMENT FOR YOU. >> TO BE A PART OF THAT MEANS SO MUCH MORE BEYOND JUST THE DOCTOR-PATIENT RELATIONSHIP THAT WE GET TO EXPERIENCE JUST IN THE WALLS OF A HOSPITAL OR A CLINIC. >> IT WAS SUCH A JOY AND A CELEBRATION OF EVERYTHING LIFE AFTER CANCER SHOULD BE. >> Reporter: HAND IN HAND, STEP BY STEP, THEY GAVE HER AWAY AFTER GIVING HER A SECOND CHANCE AT LIFE. >> JUST TO BE LIKE THE FIRSTHAND WITNESS RIGHT NEXT TO THAT, I THINK WAS INCREDIBLE. >> THIS IS A DAY THE LORD HAS MADE. >> Reporter: FOUR LIVES FOREVER CONNECTED THROUGH THE MIRACLE OF MEDICINE AND THE POWER OF LOVE. >> IN THE CEREMONY, WHEN THE PASTOR SAYS "WHO GIVES THIS WOMAN?" THEY BOTH SAID "WE DO." AND THEY TRULY DID, BECAUSE THEY GAVE ME LIFE TO ALLOW ME TO MARRY BILL. >> A LOT OF HAPPY TEARS AT THAT WEDDING. SHERI STILL GETTING CHECKUPSING AND HOPES TO STAY CANCER-FREE AS SHE STARTS HER NEW LIFE WITH BILL. THAT'S "NBC NIGHTLY NEWS
