>>> TONIGHT, THE NATIONAL LEADER OF THE FAR RIGHT PROUD BOYS HANDED THE LONGEST SENTENCE TO DATE FOR THE JANUARY 6th ATTACKS. THE GROUP'S FORMER CHAIRMAN ENRIQUE TARRIO SENTENCED TO 22 YEARS IN PRISON AFTER HE WAS CONVICTED OF SEDITIOUS CONSPIRACY FOR PLOTTING TO ATTACK THE CAPITOL WHAT HE SAID IN COURT BEFORE LEARNING HIS FATE. >>> ALSO THIS EVENING, NEW IMAGES REVEALING THAT ESCAPED KILLER IN PENNSYLVANIA HAS SLIPPED THROUGH THE POLICE PERIMETER. WHERE THE SEARCH IS BEING EXPANDED AS SCHOOLS IN THE AREA SHUT DOWN. >>> CONVICTED DOUBLE MURDERER ALEX MURDAUGH SEEKING A NEW TRIAL. THE ACCUSATIONS OF JURY TAMPERING HIS ATTORNEYS ARE MAKING AGAINST A COURT CLERK. >>> THE NEW TROPICAL STORM LEE FORECAST TO BECOME A MAJOR HURRICANE, AND THE RECORD-BREAKING SEPTEMBER HEAT ALERTS ACROSS 19 STATES >>> SENATE GOP LEADER MITCH McCONNELL BACK ON CAPITOL HILL AFTER THAT HEALTH SCARE LAST WEEK WHAT THE CAPITOL PHYSICIAN RULED OUT AS THE CAUSE >>> PRESIDENT BIDEN MASKING UP AGAIN AT THE WHITE HOUSE, AFTER FIRST LADY JILL BIDEN TESTS POSITIVE FOR COVID. THE PRECAUTIONS BEING TAKEN AS COVID CASES RISE >>> THE RACE TO ESCAPE BURNING MAN, AFTER 70,000 WERE TRAPPED IN MUD FOR DAYS. >>> AND THE NEW UPROAR, THE TRASH LEFT BEHIND >>> AND THE HEROIC ACT THAT EARNED A VIETNAM WAR PILOT THE LONG DESERVED MEDAL OF HONOR. >> Announcer: THIS IS "NBC NIGHTLY NEWS" WITH LESTER HOLT. >>> GOOD EVENING AND WELCOME. THE PROUD BOYS, THE FAR RIGHT GROUP DESCRIBED BY PROSECUTORS AS THE CHIEF INS GATORS OF THE JANUARY 6th ATTACK ON THE CAP TOM, WATCHED THEIR FORMER LEADER GO DOWN TODAY UNDER THE WEIGHT OF A 22-YEAR PRISON SENTENCE THE LONGEST SENTENCE OF ANY JANUARY 6th DEFENDANT SO FAR ENRIQUE TARRIO, WHO THE GOVERNMENT ACCUSED OF DIRECTING SOME OF THE ACTIONS OF THAT DAY WAS CONVICTED OF SEDITIOUS CONSPIRACY JUST BEFORE SENTENCING TODAY, A CONTRITE TARRIO APOLOGIZED TO LAW ENFORCEMENT, LAWMAKERS, AND HIS FAMILY, AND TOLD THE COURT "I WAS MY OWN WORST ENEMY. HIS SENTENCE FOLLOWING THE FATE OF FOUR OTHER PROUD BOYS MEMBERS WHO ALSO RECEIVED HARSH SENTENCES LAST WEEK. ALL ACCUSED OF USING VIOLENCE TO TRY AND KEEP THEN-PRESIDENT DONALD TRUMP IN POWER. ONE OF THE CHARGES, OBSTRUCTING AN OFFICIAL PROCEEDING, HAS ALSO BEEN LEVELED AGAINST MR. TRUMP IN A SEPARATE INDICTMENT. HE HAS PLEADED NOT GUILTY LET'S GET MORE NOW FROM KEN DILANIAN >> WHAT ARE WE HERE FOR? TO STOP THE STEAL! >> Reporter: TONIGHT, A CENTRAL FIGURE IN THE ATTACK ON THE U.S. CAPITOL HAS BEEN HANDED THE STIFFEST PRISON SENTENCE SO FAR. A JUDGE RULED THAT ENRIQUE TARRIO, ONE-TIME LEADER OF THE FAR RIGHT PROUD BOYS, WILL SPEND 22 YEARS BEHIND BARS. WHILE NOT PHYSICALLY PRESENT DURING THE JANUARY 6th RIOT, HE DIRECTED OTHERS AND CELEBRATED AFTERWARD, SAYING IN A TEXT MESSAGE, "MAKE NO MISTAKE, WE DID THIS." PROSECUTORS HAD SOUGHT 33 YEARS FOR TARRIO, BUT JUDGE TIMOTHY KELLY DECIDED THAT WAS TOO LONG KELLY ALSO SENTENCED FOUR OTHER PROUD BOYS LAST WEEK TO LENGTHY PRISON TERMS, BUT FAR LESS THAN PROSECUTORS HAD ASKED FOR. SOME OF THEM SEEN HERE AT THE CAPITOL. >> AMERICAN CITIZENS ARE STORMING THE CAPITOL, TAKING IT BACK RIGHT NOW THERE'S MILLIONS OF PEOPLE OUT HERE. THIS IS [ BLEEP ] CRAZY. >> THIS IS SUCH HISTORY. >> Reporter: TARRIO AND THREE OTHER PROUD BOYS WERE CONVICTED IN MAY OF SEDITIOUS CONSPIRACY PROSECUTORS SAID THEIR GOAL WAS TO ORCHESTRATE VIOLENCE TO KEEP THEN-PRESIDENT TRUMP IN OFFICE. AND THAT THE PROUD BOYS WERE BEHIND EVERY MAJOR BREACH OF THE CAPITOL DURING THE ATTACK AFTERWARDS, ON CNN, TARRIO RIDICULED MEMBERS OF CONGRESS WHO HUDDLED IN FEAR, AS RIOTERS BREACHED THE BUILDING >> I'M NOT GOING TO CRY ABOUT A GROUP OF PEOPLE THAT DON'T GIVE A CRAP ABOUT THEIR CONSTITUENTS >> Reporter: BUT A DIFFERENT TONE IN COURT TODAY. TELLING THE JUDGE, "I AM NOT A POLITICAL ZEALOT," AND SAYING, "TO THE MEN AND WOMEN OF LAW ENFORCEMENT WHO ANSWERED THE CALL THAT DAY, I'M SORRY. >> KEN, THIS SENTENCE IS FOUR YEARS LONGER THAN THE PREVIOUS LONGEST SENTENCE FOR JANUARY 6th. >> Reporter: THAT'S RIGHT, LESTER. AND THERE HAVE BEEN OVER 1,100 CRIMINAL CASES SO FATHER. THE JUDGE CALLED TARRIO'S APOLOGY BETTER THAN NOTHING, BUT HE SAID HE DIDN'T BELIEVE TARRIO WAS REMORSEFUL FOR THE CRIME HE WAS CONVICTED OF LESTER >> KEN DILANIAN TONIGHT, THANK YOU. >>> FIVE DAYS AFTER A CONVICTED KILLER ESCAPED FROM A PRISON IN PENNSYLVANIA, AUTHORITIES HAVE NOW EXPANDED THEIR SEARCH. GEORGE SOLIS IS IN CHESTER COUNTY, PENNSYLVANIA, AS NEW SIGHTINGS COME IN >> Reporter: AUTHORITIES CONFIRM THESE NEW IMAGES SHOW WHAT CONVICTED KILLER AND ESCAPED INMATE DANELO CAVALCANTE LOOKS LIKE AFTER NEARLY A WEEK ON THE RUN. >> THE PHOTOS CONFIRM THAT CAVALCANTE HAS NOT CHANGED HIS APPEARANCE, BUT ALSO THAT HE HAS OBTAINED A BACKPACK, A DUFFEL SLING-TYPE PACK, AND A HOODED SWEATSHIRT. >> Reporter: THE PICTURES CAPTURED FROM A TRAIL CAMERA ON THE PROPERTY OF A BOTANICAL GARDEN, FIVE MIMES FROM THE CHESTER COUNTY PRISON WHERE CAVALCANTE ESCAPED FROM LAST THURSDAY POLICE SAY THE FIVE-FOOT CAVALCANTE HAS BEEN ABLE TO ELUDE CAPTURE, POTENTIALLY MOVING BEYOND AN INITIAL POLICE LINE, IN PART BECAUSE HE IS WITHIN A HEAVILY WOODED AREA. >> OBVIOUSLY WE WOULD HAVE LIKED TO CAPTURE BEFORE GETTING THROUGH THAT PERIMETER, BUT IT'S ALSO NOT SHOCKING. IT'S DARK. IT'S A LARGE AREA. >> Reporter: AUTHORITIES NOW EXPANDING THE SEARCH AREA, WHICH HAD BEEN FOCUSED ON A TWO-MILE RADIUS OUTSIDE THE PRISON WHERE THERE HAD BEEN MULTIPLE SIGHT SIGHTINGS, INCLUDING ONE CAPTURED ON DOORBELL CAMERA. >> THE ONLY THING I HAD TO DEFEND MYSELF WAS A PICTURE FRAME. >> Reporter: RYAN DRUMMOND SAYS CAVALCANTE WAS IN HIS HOME ON FRIDAY, AND WHILE UPSTAIRS, HE SAW THE ESCAPED INMATE ON THE GROUND FLEUR, WHO FLIPPED LIGHT SWITCHES ON AND OFF. >> AND HE FLIPPED THE LIGHT SWITCH BACK A FEW TIMES, WHICH WAS THE REAL PANIC MOMENT WHERE I TURNED TO MY WIFE AND SAID, HE IS HERE IN THE HOUSE >> Reporter: THE ONGOING SEARCH PROMPTING SCHOOLS TO SHUT DOWN. HOW READY ARE YOU FOR THIS TO BE OVER? >> I'M READY FOR TO IT BE OVER YESTERDAY. IT'S SCARY >> Reporter: IN RECENT DAYS, RESIDENTS HAVE BEEN RECEIVING CALLS LIKE THIS ONE, OBTAINED BY NBC NEWS, ALERTING THEM TO STAY VIGILANT WITH CAVALCANTE ON THE LOOSE. >> IF YOU SEE HIM, DO NOT APPROACH AND CALL 911 IMMEDIATELY. HE IS CONVICTED OF HOMICIDE AND PRESUMED, TREATMENTLY DANGEROUS. >> Reporter: LAST MONTH, CAVALCANTE, WHO WAS ORIGINALLY FROM BRAZIL, WAS SENTENCED TO LIFE IN PRISON FOR THE BRUTAL STABBING MURDER OF HIS EX-GIRLFRIEND. POLICE BROADCASTING AUDIO RECORDINGS FROM HIGH ABOVE. CAVALCANTE'S OWN MOTHER URGING HIM TO TURN HIMSELF IN. >> HE'S A BAD GUY. HE NEEDS TO BE IN CUSTODY. AND WE'RE DETERMINED TO CAPTURE HIM >> GEORGE, IS THERE ANY SENSE FROM AUTHORITIES AS TO WHERE THE FUGITIVE RIGHT BE HEADED NOW? >> Reporter: LESTER, EVERY INDICATION IS THAT HE'S HEADING SOUTH, POTENTIALLY NEARING THE DELAWARE STATE LINE PENNSYLVANIA STATE POLICE SAY THEY ARE WORKING WITH OTHER STATE AND FEDERAL PARTNERS TO PREPARE IN THE EVENT HE CROSSES STATE LINES. LESTER >> GEORGE SOLIS, THANK YOU. >>> IN SOUTH CAROLINA, A NEW TWIST TONIGHT IN THE CASE OF CONVICTED MURDERER ALEX MURDAUGH HIS LAWYERS DEMANDING A NEW TRIAL, SAYING THE COURT CLERK IMPROPERLY INFLUENCED THE JURY KATHY PARK HAS THE LATEST. >> Reporter: TONIGHT, A SURPRISING MOTION FILED BY ALEX MURDAUGH'S DEFENSE ATTORNEYS ACCUSES THE COUNTY CLERK BECKY HILL OF JURY TAMPERING. AND NOW THE LEGAL TEAM IS DEMANDING A NEW TRIAL AND A FEDERAL INVESTIGATION. >> THE CLERK OF COURT HAD IMPROPER PRIVATE COMMUNICATIONS WITH THE JURORS >> Reporter: HILL DID NOT RESPOND TO NBC NEWS' REQUEST FOR COMMENT. IN COURT DOCUMENTS FILED TODAY, MURDAUGH'S ATTORNEYS CLAIM THAT HILL HAD FREQUENT PRIVATE CONVERSATIONS WITH THE JURY FOREPERSON, TOLD JURORS NOT TO BE FOOLED BY MURDAUGH'S TESTIMONY, ASKED JURORS FOR THEIR OPINIONS ABOUT MURDAUGH'S GUILT OR INNOCENCE, PRESSURED THEM TO REACH A QUICK VERDICT, AND INVENTED A STORY ABOUT A FACEBOOK POST TO REMOVE A JUROR SHE BELIEVED LEANED IN FAVOR OF THE DEFENSE MURDAUGH'S ATTORNEY SAYING ALEX STILL MAINTAINS HIS INNOCENCE. WHAT HAS HE SHARED WITH YOU ABOUT THIS LATEST MOTION? >> WELL, I CAN'T TALK WITH YOU ABOUT ATTORNEY-CLIENT PRIVILEGE INFORMATION. I CAN TELL YOU WHEN I SHARED WITH HIM THE AFFIDAVITS, HE IS A LAWYER HE WAS ASTONISHED. HE WAS SHAKING HE WAS IN DISBELIEF. >> Reporter: MONTHS AFTER THE TRIAL ENDED, HILL PUBLISHED A TELL-ALL BOOK, EVEN WRITING ABOUT VISITING THE MURDER SCENE "SOME OF US EITHER FROM THE COURTHOUSE, LAW ENFORCEMENT OR JURY AT MOSELLE HAD AN EPIPHANY AND SHARED OUR THOUGHTS WITH OUR EYES >> SHE IS TRYING TO MAKE MONEY OFF OF IT. SHE IS SELLING THE BOOK. >> Reporter: EARLIER THIS YEAR THE JURY FOUND ALEX GUILTY OF KILLING HIS WIFE AND SON THE JURY HANDING DOWN TWO LIFE SENTENCES. >> THESE MOTIONS ARE ALWAYS DIFFICULT TO WIN THE DEFENDANT HAS TO SHOW NOT ONLY THAT THEY JUST DISCOVERED THIS EVIDENCE, BUT IT'S EVIDENCE THAT WOULD PROBABLY AFFECT THE OUTCOME OF A NEW TRIAL. >> AND KATHY JOINS US NOW FROM COLUMBIA, SOUTH CAROLINA WHAT'S NEXT IN THE LEGAL PROCEEDINGS? >> Reporter: LESTER, NOW THAT THE MOTION HAS OFFICIALLY BEEN FILED, THE ATTORNEY GENERAL OF SOUTH CAROLINA, ALLEN WILSON, HAS TEN DAYS TO RESPOND AND EARLIER TODAY, WILSON RELEASED A STATEMENT, SAYING THAT HE'S REVIEWING THIS MOTION NOW LESTER >> KATHY PARK, THANK YOU. >>> ALSO TONIGHT, WE'RE TRACKING THE NEWLY FORMED TROPICAL STORM LEE IN THE ATLANTIC LEE IS EXPECTED TO BECOME A MAJOR HURRICANE BY THE END OF THE WEEK. CURRENT MODELS SHOW IT STAYING OFFSHORE OF THE U.S., BUT THE TRACK COULD SHIFT IN THE COMING DAYS. WE'RE ALSO MONITORING THIS RECORD-BREAKING SEPTEMBER HEAT WAVE. SOME 75 MILLION AMERICANS ON ALERT IN 19 STATES RIGHT NOW FROM TEXAS TO MINNESOTA TO MASSACHUSETTS. >>> HEALTH NEWS TONIGHT INVOLVING FIRST LADY JILL BIDEN, WHO HAS TESTED POSITIVE FOR COVID. >> AND SENATE REPUBLICAN LEADER MITCH McCONNELL, AFTER HE FROZE UP DURING A NEWS CONFERENCE LAST WEEK PETER ALEXANDER JOINS US PETER, FIRST, WHAT DO WE KNOW ABOUT THE PRESIDENT AND FIRST LADY TONIGHT >> Reporter: LESTER, THE WHITE HOUSE SAYS THE FIRST LADY IS EXPERIENCING MILD SYMPTOMS AND WILL REMAIN AT THEIR DELAWARE BEACH HOUSE THIS WEEK. THE PRESIDENT, WE'RE TOLD, TESTED NEGATIVE AGAIN TODAY AND HAS NO SYMPTOMS TODAY AT THE MEDAL OF HONOR CEREMONY HERE, HE WALKED IN WEARING A MASK, IN KEEPING WITH CDC GUIDELINES, BUT TOOK IT OFF TO PRESENT THE AWARD. THE BIG FOCUS NOW IS HIS SCHEDULED TRIP TO INDIA FOR THE G20 SUMMIT HE'LL BE TESTED AGAIN BEFORE HE LEAVES ON THURSDAY, AND ALL OF THIS COMES AMID CONCERNS OF ANOTHER POSSIBLE RISE IN COVID CASES THIS FALL WITH AN UPDATED VACCINE EXPECTED MID MONTH. LESTER >> AND PETER, THERE IS ALSO AN UPDATE ON THE HEALTH OF THE SENATE'S TOP REPUBLICAN MITCH McCONNELL. >> Reporter: YEAH, THAT'S RIGHT THAT CONGRESSIONAL PHYSICIAN, LESTER, SAYS THERE'S NO EVIDENCE OF SEIZURE OR STROKE IS TO BLAME FOR SENATOR McCONNELL'S RECENT ON-CAMERA FREEZEUPS, TWO OF THEM IN THE LAST TWO MONTHS McCONNELL WAS BACK ON SENATE FLOOR THIS AFTERNOON WITH A SUBTLE MENTION OF WHAT HE CALLED "ONE PARTICULAR MOMENT THAT'S GETTING A LOT OF ATTENTION. THE RECENT HEALTH SCARES FOLLOW McCONNELL'S FALL AND CONCUSSION IN MARCH. LESTER >> ALL RIGHT, PETEPETER, THANKS >>> IN ALABAMA, A FEDERAL OF JUDGES REJECTED THE LATEST CONGRESSIONAL REDISTRICTING MAP DRAWN UP BY REPUBLICANS. THE COURT FOUND IT FAILED TO FOLLOW A SUPREME COURT ORDER TO CREATE A SECOND MAJORITY BLACK DISTRICT IN THE STATE. NOW AN INDEPENDENT LAWYER AND A CARTOGRAPHER WILL COME UP WITH A NEW MAP IN AN EFFORT TO GIVE BLACK VOTERS MORE POWER AT THE BALLOT BOX >>> HE'S ACCUSED OF BRIBERY, CORRUPTION, AND OTHER CHARGES. TONIGHT, THE SUSPENDED ATTORNEY GENERAL OF TEXAS IS FACING PERHAPS HIS BIGGEST TEST AS HIS IMPEACHMENT TRIAL GETS UNDER WAY. HERE IS LAURA JARRETT. >> Reporter: TONIGHT, EMBATTLED TEXAS ATTORNEY GENERAL KEN PAXTON FIGHTING FOR HIS POLITICAL SURVIVAL AT A RARE IMPEACHMENT TRIAL. >> SOME OF THE EVIDENCE THAT YOU'RE GOING TO HEAR IS SHOCKING >> Reporter: WITH FIERY OPENING STATEMENTS ROUNDING OUT DAY ONE. >> WHAT IS BEING ATTEMPTED HERE HASN'T HAPPENED IN OUR STATE IN 100 YEARS. >> Reporter: THE CONSERVATIVE FIREBRAND SUSPENDED AFTER THE REPUBLICAN-CONTROLLED STATE HOUSE VOTED TO IMPEACH HIM BACK IN MAY THE STATE SENATE NOW DECIDING WHETHER HE SHOULD BE PERMANENTLY REMOVED FROM OFFICE. PAXTON HAS BEEN ACCUSED OF MISUSING HIS POWERS TO HELP A LOCAL REAL ESTATE DEVELOPER'S STRUGGLING BUSINESS IN EXCHANGE FOR FREE HOME RENOVATIONS. HOUSE IMPEACHMENT MANAGERS SAY THAT SAME DEVELOPER WAS HELPING PAXTON COVER UP AN ALLEGED AFFAIR >> THOSE ALLEGATIONS ARE OFFENSIVE AND FALSE. THE ATTORNEY GENERAL PLEADS NOT GUILTY. >> Reporter: THE ATTORNEY GENERAL FORMALLY PLEADING NOT GUILTY TODAY TO 16 ARTICLES OF IMPEACHMENT. >> FOR GOD'S SAKES, WHAT ARE WE DOING HERE >> Reporter: IT'S A DRAMATIC TURN FOR PAXTON, KNOWN FOR HIS LAWSUITS AGAINST THE BIDEN AND OBAMA ADMINISTRATIONS OVER HEALTH CARE AND IMMIGRATION. AND WHILE HE'S BEEN DOGGED BY INVESTIGATIONS FOR YEARS, VOTERS IN TEXAS RE-ELECTED HIM, TWICE. >> AT THE END OF THE DAY, MR. PAXTON WASN'T THE MAN THEY THOUGHT HE WAS >> Reporter: HIS POLITICAL FUTURE NOW IN THE HANDS OF THE STATE'S 31 SENATORS, 19 OF THEM REPUBLICAN, ONE HIS OWN WIFE, SITTING AT TRIAL, BUT BARRED FROM DELIBERATING AND SOME FAMILIAR FACES REPORTEDLY ON THE LIST OF POTENTIAL WITNESSES, INCLUDING PAXTON'S 2022 CHALLENGER, GEORGE P. BUSH, AND POLITICAL STRATEGIST KARL ROVE LAURA JARRETT, NBC NEWS >>> IN 60 SECONDS, THE NATIONWIDE GROUND STOP FROM A MAJOR AIRLINE WHAT HAPPENED? >>> PLUS, THE EXODUS FINALLY UNDER WAY AT THE BURNING MANIFEST VALUE IN THE NEVADA DESERT, AFTER TENS OF THOUSANDS WERE TRAPPED FOR >>> BACK NOW WITH THE CHAOTIC MOMENTS AT AIRPORTS TODAY, JUST AS MANY LABOR DAY TRAVELERS WERE STILL HEADING HOME UNITED AIRLINES ISSUING A NATIONWIDE GROUND STOP, CITING A SYSTEM-WIDE TECHNOLOGY ISSUE. AFTER ABOUT AN HOUR, UNITED SAID THE GLITCH WAS FIXED, AND FLIGHTS RESUMED. UNITED SAID IT WAS WORKING TO ASSIST DELAYED PASSENGERS. >>> AND THE MASS EXODUS FROM BURNING MAN IS SLOWLY MOVING FORWARD, AFTER RAIN AND MUD TRAPPED MORE THAN 70,000 FESTIVAL-GOERS FOR DAYS WELL NOW, THERE'S NEW CONCERN OVER WHAT THEY'RE LEAVING BEHIND OUR LIZ KREUTZ IS THERE. >> Reporter: AT BURNING MAN'S BLACKROCK CITY, DAYS TRAPPED IN MESSY SLUDGE HAS NOW TURNED TO HOURS STUCK IN GRIDLOCK TRAFFIC >> IT WAS A GREAT BURN UNTIL IT RAINED. >> Reporter: TONIGHT, THE SLOW CRAWL OUT OF THE REMOTE DESERT FESTIVAL STRETCHING FOR MILES. TENS OF THOUSANDS STILL TRYING TO GET OUT. THIS IS WHERE FESTIVAL-GOERS FINALLY REACH A PAVED ROAD BUT GETTING HERE IN A LESSON IN PATIENCE FOR SOME, THE SIX-MILE TRIP OUT TAKING AS LONG AS NINE HOURS AND NOW, QUESTIONS ARE MOUNTING ABOUT THE KAY YOT ECK MESS LEFT BEHIND THE PERSHING COUNTY SHERIFF SLAMMING THE CONDUCT OF FESTIVAL GOERS, TELLING "THE SAN FRANCISCO CHRONICLE" SOME ABANDONED THEIR PROPERTY AND VEHICLES, LEAVING TRASH ACROSS SEVERAL MILES AS THEY SCRAMBLED TO ESCAPE THE STORM. >> THERE HAVE BEEN PEOPLE THAT HAVE LEFT THINGS I THINK A LOT OF PEOPLE HAD A VERY FEAR-BASED REACTION. >> Reporter: ORGANIZERS HAVE NOT RESPONDED TO NBC'S REQUEST FOR COMMENT ABOUT THE AFTERMATH, BUT VETERAN FESTIVAL-GOERS LIKE TERRY GAULT, WHO IS STAYING BEHIND TO CLEAN UP, ARE FRUSTRATED >> WE KNOW THAT PEOPLE ABANDONED THEIR CAMPS, SO, IT'S NOT SURPRISING TO HEAR THAT THERE WAS TRASH LEFT BEHIND. >> Reporter: WHAT'S YOUR MESSAGE TO PEOPLE WHO LEAVE THINGS BEHIND >> WELL, ONE OF THE TEN PRINCIPLES IS LEAVE NO TRACE, SO, FOR THOSE PEOPLE WHO LEFT TRASH BEHIND, THOSE AREN'T REAL BURNERS. THEY PROBABLY SHOULDN'T BE OUT HERE ANYWAY >> Reporter: THIS ALL COMES AS AUTHORITIES CON CONTINUE TO INVESTIGATE THE DEATH OF A MAN AT THE HEIGHT OF THE STORM AUTHORITIES SAY THERE IS NO INDICATION IT WAS WEATHER-RELATED, BUT THAT CONDITIONS MAY HAVE SLOWED THEIR RESPONSE WHILE MOST TODAY ARE GOING OUT BY CAR, SOME FINDING WAYS TO AVOID THE CONGESTION >> WITH THE BIKE, IT WAS JUST 30 MINUTES. >> Reporter: TONIGHT, WITH HALF THE FESTIVAL STILL INSIDE, THE FAMOUS BURNING MAN IS GONE, BUT A MASSIVE CLEANUP EFFORT STILL LIES AHEAD LIZ KREUTZ, NBC NEWS, BLACKROCK DESERT >>> UP NEXT, AN IMPENDING STRIKE BY WORKERS AT THE BIG THREE AUTOMAKERS AND THE POTENTIAL IMPACT ON THE PRICE OF YOUR NEW CAR. >>> IT'S LOOKING MORE LIKELY THAT MORE THAN 100,000 UNITED AUTO WORKERS COULD GO ON STRIKE BY THE END OF NEXT WEEK, AS CONTRACT NEGOTIATIONS HAVE SLOWED AND THAT COULD MEAN CAR PRICES WILL SOAR EVEN HIGHER. HERE'S TOM COSTELLO. >> Reporter: TEN DAYS UNTIL THE CURRENT CONTRACT EXPIRES, UP TO 146,000 AUTO WORKERS ARE NOW WIDELY EXPECTED TO WALK OFF THE JOB ON FRIDAY THE 15th NEGOTIATIONS ROCKY AT BEST >> WE HAVE GIVEN OUR ECONOMIC PROPOSALS OVER A MONTH AGO AND THEY'VE HAD NO RESPONSE TO IT >> Reporter: THE BIG THREW AUTOMAKERS, FORD, GM, AND CHRYSLER OWNER STELLANTIS FACE TOUGH DEMANDS. THE UNION'S DEMANDS INCLUDE A 46% PAY HIKE, A 32-HOUR WORKWEEK BUT PAY FOR 40 HOURS, AND THE RESTORATION OF TRADITIONAL PENSION BENEFITS UAW WORKERS ALREADY MAKE $10 TO $20 MORE THAN NON-UNION AUTOMAKERS,INCLUDING TOYOTA AND TESLA THE UAW ADMITS THE DEMAND IS AUDACIOUS, BUT INSISTS THEY DESERVE MORE AFTER RECORD PROFITS FORD SAYS IT'S ALREADY OFFERED A 9% PAY HIKE. STELLANTIS CALLS NEGOTIATIONS CONSTRUCTIVE AND COLLABORATIVE. GM SAYS IT'S WORKING HARD TO RESOLVE 1,000 UNION DEMANDS. IN OGDEN, UTAH, JAKE TALBOT AT YOUNG FORD WARNS A STRIKE COULD SEND CAR PRICES HIGHER >> IF YOU'RE GOING TO BUY A CAR IN THE NEXT FEW MONTHS, PROBABLY NOT A BAD IDEA TO DO IT NOW. >> Reporter: AND SMALLER SUPPLY CHAIN BUSINESSES COULD BE AFFECTED BY THE STRIKE. >> WE'RE GOING TO BE ON OUR OWN NOW. >> Reporter: WITH 200 EMPLOYEES, TWIN CITY DIE CASTINGS MAKES METAL COMPONENTS FOR CARS >> SOMEWHERE BETWEEN 30 DAYS AND 60, IT'S GOING TO BE VERY HARD FOR US TO MAINTAIN OUR WORKFORCE AND CONTINUE TO PAY PEOPLE. >> Reporter: AFTER A SUMMER OF HIGH PROFILE LABOR DISPUTES AND STRIKES, A UAW MEGASTRIKE NOW LOOMS LARGE. TOM COSTELLO, NBC NEWS. >>> COMING UP FOR US TONIGHT, THE FORMER ARMY HELICOPTER PILOT WHO FLEW INTO ENEMY FIRE TO SAVE HIS FELLOW SOLDIERS RECEIVING THE MEDAL OF HONOR TODAY. WE SPEAK WITH HIM, NEXT >>> FINALLY TONIGHT, BRAVERY UNDER FIRE IT ONLY BEGINS TO DESCRIBE THE HEROISM OF THE FORMER ARMY CAPTAIN AWARDED THE MEDAL OF HONOR TODAY HE SPOKE EXCLUSIVELY WITH OUR COURTNEY KUBE >> Reporter: IT WAS THE PEAK OF THE VIETNAM WAR WHEN FIRST LIEUTENANT LARRY TAYLOR GOT A CALL, SOLDIERS IN TROUBLE. MINUTES LATER, HE WAS FLYING HIS COBRA ATTACK HELICOPTER IN THE DARK OF NIGHT. >> SOMETIMES YOU'D FLY WITH -- IN YOUR UNDERDRAWERS OR SHOWER SOAP ON, BUT BY GOD, YOU GOT IT OFF THE GROUND IN TWO MINUTES. >> Reporter: NEARLY 100 NORTH VIETNAMESE TROOPS WERE CLOSING IN ON FOUR AMERICAN SOLDIERS DAVE HILL WAS ONE OF THEM >> TOTALLY SURROUNDED. AN AREA ABOUT THE SIZE OF A FOOTBALL FIELD. >> Reporter: AND NEARLY OUT OF AMMO TAYLOR AND HIS WINGMAN FIRED EVERYTHING THEY HAD, BUT THE AMERICANS WERE STILL PINNED DOWN OVER THE RADIO, TAYLOR'S COMMANDER ORDERED HIM BACK TO BASE TO RESUPPLY MIKE HOLDEN SAW IT UNFOLDING. >> HE TOLD HIM, I'M THE SENIOR OFFICER IN THIS, YOU'RE NOT GET OFF MY FREQUENCY, I'M GOING IN OR THESE FOUR MEN ARE GOING TO DIE. TURNED IT OFF AND WENT DOWN >> Reporter: WHAT WAS GOING THROUGH YOUR MIND >> BEFORE I STARTED THE APPROACH IN, I THOUGHT, THIS IS A GOOD IDEA. AND WHEN I GOT ABOUT HALFWAY THROUGH IT, I THOUGHT, WHAT THE HELL AM I DOING >> Reporter: HE LANDED UNDER HEAVY ENEMY FIRE WITH NO EXTRA SEATS, THE FOUR SOLDIERS CLUNG TO THE OUTSIDE OF THE CHOPPER >> THERE IS NO DOOR. THIS IS A COBRA. GET THIS HELL ON HERE. SO THEY -- TWO OF THEM SAT ON THE SKID AND GRABBED A STRUT. TWO OF THEM STRADDLED THE ROCKET PODS BACKWARDS AND FLEW >> Reporter: TAYLOR GOT THEM ALL OUT SAFELY DID YOU GET IN TROUBLE FOR DEFYING THE ORDER? >> WHAT ARE YOU GOING TO DO? SEND ME TO VIETNAM >> Reporter: IT WAS 30 YEARS BEFORE TAYLOR SAW ANY OF THOSE FOUR AMERICAN SOLDIERS AGAIN AT A REUNION >> THAT WAS THE FIRST TIME WE COULD PERSONALLY THANK HIM. >> Reporter: HILL STARTED A YEARS' LONG EFFORT TO GET TAYLOR THE NATION'S HIGHEST MILITARY AWARD. TODAY AT THE WHITE HOUSE, THAT MISSION WAS COMPLETED. >> WE NEVER LOST A MAN, AND WE NEVER LEFT ANYBODY BEHIND FOR ANY REASON AND -- YEAH, I THINK I'M PROUD OF THAT. I DID MY JOB >> Reporter: COURTNEY KUBE, NBC NEWS, WASHINGTON >>> AND THAT'S "NIGHTLY NEWS" FOR THIS TUESDAY THANK YOU FOR WATCHING I'M LESTER HOLT. PLEASE TAKE CARE OF YOURSELF AND EACH OTHER. GOOD NIGHT