>>> TONIGHT, THE STUNNING SHAKE-UP ACROSS THE MEDIA LANDSCAPE. TUCKER CARLSON, THE HIGHEST-RATED HOST AT FOX AND ACROSS ALL OF CABLE NEWS, IS OUT. DAYS AFTER THAT MASSIVE FOX-DOMINION DEFAMATION SETTLEMENT. WHAT WE'RE FINDING OUT ABOUT THE CIRCUMSTANCES ON HIS EXIT. PLUS, DON LEMON, THE LONG-TIME CNN ANCHOR, ALSO ABRUPTLY DISMISSED. AND THE CEO OF NBC UNIVERSAL FIRED AFTER A COMPLAINT ABOUT INAPPROPRIATE CONDUCT. >>> ALSO THE DESPERATE HOURS IN SUDAN FOR THOUSANDS OF AMERICANS TRAPPED. WILL A JUST-ANNOUNCED CEASE-FIRE HOLD? AND OUR NEW REPORTING ON THE U.S. EFFORTS TO GET THOSE AMERICANS OUT. >>> PRESIDENT BIDEN POISED TO OFFICIALLY ANNOUNCE HIS CAMPAIGN FOR RE-ELECTION. WHAT OUR NEW NBC NEWS POLL SHOWS ABOUT HIS POPULARITY, DONALD TRUMP AND A POTENTIAL REMATCH. >>> ALARMING MOMENTS AS A BIRD STRIKE SPARKS A FIRE IN A PLANE ENGINE. HOW AIRPORTS ARE TRYING TO STOP BIRDS FROM CAUSING POTENTIAL AIR DISASTERS. >>> IS THERE A FUTURE FOR BED BATH & BEYOND? AS THE CHAIN FILES FOR BANKRUPTCY, WHAT YOU NEED TO KNOW. >>> HOW ARTIFICIAL INTELLIGENCE IS HELPING THE VISUALLY IMPAIRED.IN FOR DANCE LEGEND LEN GOODMAN. >> Announcer: THIS IS NBC "NIGHTLY NEWS" WITH LESTER HOLT. >>> GOOD EVENING AND WELCOME ON THIS MONDAY. WE START WITH THREE MAJOR HEADLINES FROM THE MEDIA WORLD SWIRLING TONIGHT. THEY INVOLVE SOME OF THE MOST INFLUENTIAL AND/OR PROVOCATIVE FIGURES IN THE BUSINESS. STARTING CLOSE TO HOME FOR US TONIGHT WHERE JEFF SHELL, THE NOW FORMER CEO OF NBC UNIVERSAL, IS OUT, BECOMING THE LATEST HOLLYWOOD EXECUTIVE ACCUSED OF SEXUAL HARASSMENT AND SEX DISCRIMINATION. ADMITTING HE HAD AN INAPPROPRIATE RELATIONSHIP WITH A WOMAN IN THE COMPANY. THAT NEWS ECLIPSED THIS MORNING WITH WORD EMBATTLED CNN ANCHOR DON LEMON HAS BEEN FIRED. BUT IT IS TODAY'S ANNOUNCEMENT THAT FIREBRAND TV CABLE HOST TUCKER CARLSON IS PARTING WAYS WITH FOX NEWS THAT HAS SPARKED BURNING QUESTIONS AND SPECULATION, COMING RIGHT ON THE HEELS OF FOX'S DECISION JUST A WEEK AGO TO SETTLE A DEFAMATION LAWSUIT FOR 7. -- $787.5 MILLION. IT'S WHERE WE START WITH NBC'S STEPHANIE GOSK. >> AND WE'LL BE BACK ON MONDAY. IN THE MEANTIME, HAVE THE BEST WEEKEND WITH THE ONES THAT YOU LOVE AND WE'LL SEE YOU THEN. >> Reporter: WITH THAT TUCKER CARLSON SIGNED OFF ON HIS SHOW FRIDAY. BUT HE WOULD NOT BE COMING BACK. FOX NEWS MEDIA AND TUCKER CARLSON HAVE AGREED TO PART WAYS, THE NETWORK SAID, IN A SURPRISE STATEMENT TODAY, OFFERING NO EXPLANATION FOR ENDING THE MOST POPULAR SHOW ON CABLE NEWS. THE AUDIENCE TOPS 3 MILLION ON AN AVERAGE NIGHT. VIEWERS DRAWN TO CARLSON'S FAR RIGHT OPINIONS ON ISSUES FROM JANUARY 6th TO IMMIGRATION. >> THIS POLICY IS CALLED THE GREAT REPLACEMENT, THE REPLACEMENT OF LEGACY AMERICANS WITH MORE OBEDIENT PEOPLE FROM FARAWAY COUNTRIES. >> Reporter: CARLSON LEAVES JUST DAYS AFTER FOX CORPORATION SETTLED A DEFAMATION LAWSUIT WITH DOMINION VOTING SYSTEM FOR $787.5 MILLION. NEITHER THE NETWORK OR CARLSON HAS RESPONDED TO REQUESTS FOR COMMENT. THE POPULAR HOST IS ALSO BEING SUED BY FORMER FOX PRODUCER ABBY GROSSBERG. SHE ACCUSES CARLSON OF PROMOTING A HOSTILE WORK ENVIRONMENT. SPEAKING TO NBC NEWS IN AN EXCLUSIVE INTERVIEW. >> WOMEN WERE OBJECTIFIED. IT WAS A GAME. IT WAS A SPORT. IT WAS LIKE BEING IN A LOCKER ROOM. >> Reporter: IN A STATEMENT THE NETWORK CALLED THE CLAIMS UNMERITORIOUS AND RIDDLED WITH FALSE ALLEGATIONS. BUT CARLSON'S DEPARTURE FROM FOX WASN'T THE ONLY MEDIA SHAKE-UP TODAY. CNN ANNOUNCED LONG-TIME ANCHOR DON LEMON WOULD BE LEAVING. >> SO GOOD MORNING, EVERYONE. WELCOME IN. WE'RE SO GLAD YOU COULD JOIN US HERE. >> Reporter: CEO CHRIS LICHT THANKED LEMON IN A MESSAGE TO THE COMPANY ADDING "DON WILL FOREVER BE A PART OF THE CNN FAMILY." LEMON TWEETING A DIFFERENT TAKE ON HIS SUDDEN DEPARTURE. "I AM STUNNED. I WOULD HAVE THOUGHT THAT SOMEONE IN MANAGEMENT WOULD HAVE HAD THE DECENCY TO TELL ME DIRECTLY." CNN DENIES THE CLAIM THAT MANAGEMENT DIDN'T OFFER HIM AN OPPORTUNITY FOR A MEETING. LEMON'S DEPARTURE COMES JUST TWO MONTHS AFTER CONTROVERSIAL COMMENTS HE MADE ON AIR ABOUT WOMEN. SPECIFICALLY PRESIDENTIAL CANDIDATE AND FORMER U.N. AMBASSADOR NIKKI HALEY. >> NIKKI HALEY ISN'T IN HER PRIME. SORRY. WHEN A WOMAN IS CONSIDERED TO BE IN HER PRIME IN HER 20s AND 30s AND MAYBE 40s. >> WAIT. WHAT ARE YOU -- WAIT. >> THAT'S NOT ACCORDING TO ME. >> PRIME FOR WHAT? >> I'M JUST SAYING WHAT THE FACTS ARE. GOOGLE IT. >> Reporter: LEMON LATER SAID HE REGRETTED THE COMMENTS AND CALLED THEM INARTFUL AND IRRELEVANT. LICHT KEPT HIM ON THE ANCHOR DESK TELLING STAFF HE WOULD PARTICIPATE IN UNSPECIFIED FORMAL TRAINING ACCORDING TO CNN BUSINESS. BUT TONIGHT THE CONTROVERSIAL ANCHOR IS OUT OF A JOB. NBC NEWS'S PARENT COMPANY NBC UNIVERSAL IS ALSO DEALING WITH A SUDDEN DEPARTURE. CEO JEFF SHELL IS LEAVING AFTER AN INVESTIGATION REVEALED "INAPPROPRIATE CONDUCT," ACCORDING TO COMCAST, WHICH OWNS NBC UNIVERSAL. SHELL WRITING, "I HAD AN INAPPROPRIATE RELATIONSHIP WITH A WOMAN IN THE COMPANY, WHICH I DEEPLY REGRET. I'M TRULY SORRY I LET COLLEAGUES DOWN." A LAWYER FOR CNBC ANCHOR HADLEY GAMBLE SAYS THE INVESTIGATION INTO MR. SHELL AROSE FROM A COMPLAINT BY MY CLIENT OF SEXUAL HARASSMENT AND SEX DISCRIMINATION. SHELL AND COMCAST HAVE NOT COMMENTED ON THOSE ALLEGATIONS. TONIGHT THE MEDIA LANDSCAPE IS SHAKEN, WITH THREE VERY FAMILIAR FACES NO LONGER IN THE PICTURE. >> AND STEPHANIE, WITH TUCKER CARLSON GONE HOW BIG A HOLE DOES THAT LEAVE FOR FOX NEWS? >> Reporter: WELL, LESTER, CARLSON HAD TOP BILLING IN THE NETWORK'S PRIMETIME LINE-UP. IF STOCK PRICE IS ANY INDICATION, HIS DEPARTURE COULD BE DEEPLY FELT. FOX NEWS SHARES DROPPED 3% TODAY FOLLOWING THE NEWS. FOX SAYS THEY WILL ROTATE DIFFERENT ANCHORS UNTIL FINDING A PERMANENT REPLACEMENT. LESTER? >> ALL RIGHT, STEPHANIE, THANK YOU. >>> NOW TO SUDAN WHERE THOUSANDS OF AMERICANS ARE TRAPPED BY FIGHTING. WILL A CEASE-FIRE SET TO TAKE EFFECT TONIGHT HELP THEM FIND A SAFE WAY OUT? RICHARD ENGEL HAS LATE DETAILS. >> Reporter: LATE WORD TONIGHT OF A 72-HOUR CEASE-FIRE. ANOTHER ATTEMPT TO STOP SUDAN FROM SPIRALING INTO CIVIL WAR. AS TWO RIVAL GENERALS BATTLE FOR CONTROL, LEAVING MORE THAN 16,000 AMERICANS, MANY OF THEM DUAL SUDANESE NATIONALS, STRANDED IN THE WAR ZONE. THERE ARE NO U.S. PLANS FOR A MASS RESCUE MISSION. THE U.S. EMBASSY IS URGING PEOPLE TO SHELTER IN PLACE OR FIND SAFETY IF THEY CAN AT THEIR OWN RISK. >> WE'VE CONTINUED TO BE IN CLOSE COMMUNICATION WITH U.S. CITIZENS AND INDIVIDUALS AFFILIATED WITH THE U.S. GOVERNMENT TO PROVIDE ASSISTANCE. >> Reporter: IN KHARTOUM RUNNING BATTLES HAVE CUT THE POWER AND WATER. THE AIRPORT WHERE FIGHTING HAS BEEN INTENSE IS CLOSED. SO THIS WEEKEND PRESIDENT BIDEN AUTHORIZED A SECRET RESCUE MISSION TO EVACUATE THE AMERICAN EMBASSY. HELICOPTERS FLEW 800 MILES FROM DJIBOUTI, LANDING ON THE EMBASSY GROUNDS AFTER MIDNIGHT SUNDAY. THREE CHINOOK HELICOPTERS RESCUED ABOUT 80 GOVERNMENT EMPLOYEES AND THEIR FAMILIES. GERMANY, ITALY, FRANCE, SPAIN, THE UK AND OTHERS HAVE MANAGED TO RUN FLIGHTS TO AIRLIFT THEIR CITIZENS AND SOME AMERICANS. BUT THOUSANDS OF AMERICANS REMAIN. MOHAMMED AHMED IS TRYING TO ESCAPE TO EGYPT BY BUS. HIS FAMILY BACK IN IOWA IS NERVOUS, SAYING TICKET PRICES ARE SKYROCKETING. >> I JUST WISH THAT OUR FEDERAL GOVERNMENT WOULD RECONSIDER HELPING CITIZENS. IT ISN'T RIGHT TO LEAVE THEM BEHIND LIKE THIS. >> Reporter: AMERICAN TRAVEL WRITER LAKSHMI PARSERATI MANAGED TO SEND US THIS VIDEO FROM THE CAPITAL. >> SO I'M NOT FEELING TOO GREAT ABOUT THE HELP I'VE RECEIVED FROM THE EMBASSY AT THE MOMENT. SO I AM JUST PREPARING TO GO IT ALONE AND FIGURE OUT HOW I CAN GET MYSELF TO SAFETY. >> AND RICHARD JOINING ME NOW. RICHARD, THERE ARE REAL DOUBTS ABOUT HOW SUCCESSFUL THIS 72-HOUR CEASE-FIRE WILL BE. >> Reporter: IT IS TOO EARLY FOR OPTIMISM. THE DEAL WAS ANNOUNCED BY THE UNITED STATES. SO THERE IS A DEGREE OF AMERICAN INVOLVEMENT. WHICH IS SEEN AS POSITIVE IN SUDAN, A SIGN OF INTERNATIONAL ENGAGEMENT. BUT THERE WAS ANOTHER CEASE-FIRE JUST THIS LAST WEEKEND AND IT DIDN'T HOLD. >> RICHARD ENGEL, THANK YOU. LET'S GET THE LATEST FROM COURTNEY KUBE. SHE'S AT THE PENTAGON. COURTNEY, THERE'S NO MASS EVACUATION PLANS FOR AMERICANS AT THIS POINT. >> Reporter: LESTER, THERE'S NOT. BUT AS THE SECURITY SITUATION THERE CONTINUES TO DETERIORATE, THE U.S. MILITARY IS TRYING TO ASSIST AMERICANS WHO ARE LOOKING TO GET OUT ON THEIR OWN, ESPECIALLY IN THOSE CONVOYS. TODAY U.S. DRONES FLEW OVERHEAD TO ESCORT A UNITED NATIONS CONVOY INCLUDING A HANDFUL OF U.S. CITIZENS FROM KHARTOUM TO PORT SUDAN, A 15-HOUR JOURNEY. THE U.S. ALSO ORDERED TWO NAVY WARSHIPS TO STATION OFF THE COAST OF SUDAN TO BOARD AMERICANS IN THE CASE OF A LARGER EVACUATION. AND NOW MULTIPLE COUNTRIES HAVE REACHED OUT TO THE U.S. ASKING FOR HELP TO GET THEIR DIPLOMATS OUT. AND TONIGHT U.S. OFFICIALS SAY THEY ARE CONSIDERING GRANTING THOSE REQUESTS. LESTER? >> COURTNEY KUBE WITH THE LATEST FROM THE PENTAGON. THANK YOU. >>> HE COULD MAKE IT OFFICIAL TOMORROW. PRESIDENT BIDEN EXPECTED TO ANNOUNCE HIS RE-ELECTION CAMPAIGN. BUT OUR LATEST NBC NEWS POLL FINDS TROUBLING NUMBERS FOR MR. BIDEN AS WELL AS FOR HIS POTENTIAL OPPONENT, FORMER PRESIDENT TRUMP. HERE IS KRISTEN WELKER. >> Reporter: TONIGHT PRESIDENT BIDEN'S TEAM PUTTING LAST-MINUTE TOUCHES ON HIS RE-ELECTION ANNOUNCEMENT, EXPECTED AS SOON AS TOMORROW. THREE SOURCES FAMILIAR WITH THE PLANNING TELL NBC NEWS. IT'S EXPECTED TO COME IN A PRETAPED VIDEO MESSAGE, PART OF IT FILMED LAST WEEKEND AT THE PRESIDENT'S DELAWARE BEACH HOME. THE PRESIDENT WAS ASKED ABOUT IT TODAY. HE'S LIKELY TO TOUT PROGRESS ON JOBS AND INFRASTRUCTURE, WITH SOURCES SAYING A KEY THEME OF THE VIDEO WILL BE TO FINISH THE JOB. BUT OUR NEW NBC NEWS POLL SHOWS ONLY 41% OF AMERICANS APPROVE OF MR. BIDEN'S JOB PERFORMANCE. 54% DISAPPROVE. AND ON THE EVE OF HIS POTENTIAL ANNOUNCEMENT 70% OF AMERICANS INCLUDING A MAJORITY OF DEMOCRATS SAY THEY DON'T WANT MR. BIDEN TO RUN AGAIN. 48% OF THEM CITING HIS AGE AS A MAJOR FACTOR. MR. BIDEN IS 80 YEARS OLD. AFTER THE MIDTERMS WE ASKED THE PRESIDENT ABOUT POLLS SAYING A MAJORITY OF AMERICANS DON'T WANT HIM TO RUN FOR RE-ELECTION. >> HOW DOES THAT FACTOR INTO YOUR FINAL DECISION ABOUT WHETHER OR NOT TO RUN FOR RE-ELECTION? >> IT DOESN'T. >> WHAT'S YOUR MESSAGE TO THEM? >> WATCH ME. >> Reporter: ALL OF IT SETS UP A POTENTIAL EPIC REMATCH BETWEEN PRESIDENT BIDEN AND HIS PREDECESSOR, FORMER PRESIDENT TRUMP. OUR POLLS SHOWING 60% OF AMERICANS DO NOT WANT MR. TRUMP TO RUN EITHER. THOUGH HIS SUPPORT ONLY GROWING AMONG GOP VOTERS AFTER HIS RECENT INDICTMENT. 68% OF REPUBLICANS SAY THE CHARGES WERE POLITICALLY MOTIVATED AND REPUBLICANS MUST SUPPORT HIM. 26% WANT A CANDIDATE WHO WILL NOT BE DISTRACTED AND CAN BEAT MR. BIDEN. WE'VE LEARNED MR. BIDEN IS EXPECTED TO PICK JULIE CHAVEZ RODRIGUEZ TO RUN HIS CAMPAIGN. SHE'S ONE OF HIS TOP ADVISERS AND THE GRANDDAUGHTER OF LABOR LEADER CESAR CHAVEZ. LESTER? >> KRISTEN, THANK YOU. >>> IN MINNESOTA KIM POTTER WAS RELEASED FROM PRISON TODAY. SHE IS THE FORMER POLICE OFFICER WHO KILLED DAUNTE WRIGHT TWO YEARS AGO, MISTAKING HER GUN FOR A TASER. POTTER SERVED JUST OVER A YEAR AFTER BEING CONVICTED OF MANSLAUGHTER. THE 20-YEAR-OLD WRIGHT WAS SHOT DURING A TRAFFIC STOP. HIS DEATH SET OFF SEVERAL DAYS OF PROTESTS. >>> NOW TO THE SCARY ENGINE FIRE ON AN AMERICAN AIRLINES FLIGHT SUNDAY THAT FORCED AN EMERGENCY LANDING. THE CAUSE, A BIRD STRIKE, SOMETHING AIRPORTS DEAL WITH EVERY DAY. HERE'S TOM COSTELLO. >> Reporter: IT HAPPENED JUST SECONDS INTO FLIGHT. >> MAYDAY, MAYDAY, MAYDAY. WE HAD A BIRD STRIKE AND AN ENGINE FAILURE. >> Reporter: AMERICAN 1958, COLUMBUS TO PHOENIX, FLEW RIGHT INTO A FLOCK OF GEESE. THE RIGHT ENGINE ENGULFED IN FLAMES. >> ALL OF A SUDDEN WE HEARD SOMEBODY SAY "FIRE, FIRE." AND THEY SAID THE ENGINE'S ON FIRE. >> WE COULD JUST SMELL LIKE BURNING. >> Reporter: THE 737 MANAGED TO RETURN SAFELY, LANDING ON A SINGLE ENGINE. WILDLIFE STRIKES ARE NOT UNUSUAL. IN 2021 THERE WERE MORE THAN 15,000 IN THE U.S. MOST INVOLVED BIRDS. BUT LOSING AN ENGINE IS RARE. DURING THE 2009 MIRACLE ON THE HUDSON A FLOCK OF GEESE TOOK OUT BOTH ENGINES ON A U.S. AIRWAYS FLIGHT. EVERYONE SURVIVED THE ICY RIVER LANDING. SINCE THE HUDSON INCIDENT AIRPORTS NATIONWIDE HAVE STEPPED UP EFFORTS TO MITIGATE THEIR BIRD PROBLEMS. THE SMITHSONIAN MUSEUM OF NATURAL HISTORY RECEIVES UP TO 100 BIRD REMAINS A DAY FROM AIRPORTS TRYING TO IDENTIFY THE SPECIES POSING A RISK. MATCHING DNA SAMPLES WITH HALF A MILLION SPECIMENS ON FILE. >> MOST BIRD STRIKES OCCUR ON TAKEOFF AND LANDING. SO IF WE CAN DO SOMETHING TO THAT IMMEDIATE ENVIRONMENT WE CAN REALLY DO A LOT TO PREVENT THESE BIRD STRIKES FROM HAPPENING. >> Reporter: MIGRATORY FLY ZONES ALONG THE COAST AND THE MISSISSIPPI POSE THE GREATEST RISK. WITH AIRPORTS USING CANNONS, DOGS, FALCONS AND OWLS TO SCARE THEM AWAY AND MITIGATE AN EVERYDAY THREAT. TOM COSTELLO, NBC NEWS, WASHINGTON. >>> IN 60 SECONDS, HOW LONG CAN YOU USE THOSE ICONIC BLUE COUPONS AT BED BATH & BEYOND? AFTER THE RETAILER FILES FOR BANKRUPTCY AND SAYS IT WILL CLOSE ITS ALMOST 500 STORES. RIGHT AFTER THIS. >>> CHANCES ARE YOU'VE GOTTEN ONE OF THOSE BED, BATH & BEYOND COUPONS IN THE MAIL. AS IT TURNS OUT, YOU ONLY HAVE A FEW DAYS LEFT TO USE THEM. THE ICONIC CHAIN HAS FILED FOR BANKRUPTCY WITH FINAL SALES STARTING THIS WEEK. EMILIE IKEDA REPORTS. >> Reporter: TONIGHT THE END OF AN ERA FOR THE STORIED HOME GOODS RETAILER THAT USHERED MILLIONS THROUGH LIFE'S MILESTONES. >> IT'S SAD. BECAUSE IT'S ALWAYS JUST BEEN ONE OF THESE INSTITUTIONS. >> EVERYBODY COMES HERE FOR GOOD DEALS. >> Reporter: BED BATH & BEYOND FILING FOR BANKRUPTCY THIS WEEK AFTER HANGING ON A THREAD FOR MONTHS FOLLOWING LEADERSHIP SHAKE-UPS, A DISMAL HOLIDAY SEASON AND INCREASING COMPETITION. AS BED BATH & BEYOND BEGINS LIQUIDATING ASSETS, CLOSING SALES ARE SET TO BEGIN WEDNESDAY. CUSTOMERS CAN USE GIFT CARDS THROUGH MAY 8th AND RETURN ITEMS PURCHASED BEFORE APRIL 26th UNTIL MAY 24th. THE COMPANY EXPECTS ALL 360 BED BATH & BEYOND AND 120 BUY BUY BABY STORES TO CLOSE BY THE END OF JUNE. SHAPING UP TO BE THE LATEST CASUALTY OF A TUMULTUOUS SEVERAL YEARS IN THE WAKE OF THE PANDEMIC. DAVID'S BRIDAL AND PARTY CITY FILING FOR BANKRUPTCY THIS YEAR. JCPENNEY, TOYS "R" US AND NEIMAN MARCUS DOING SO BEFORE THAT. THE RETAIL LANDSCAPE HAS VASTLY CHANGED SINCE THE COMPANY'S CREATION A HALF A CENTURY AGO, MAKING A NAME FOR ITSELF WITH ITS ICONIC BLUE COUPONS MAILED TO MILLIONS. BUT EVEN FORMER LEADERSHIP ACKNOWLEDGED THE COMPANY SHOULD HAVE LEANED MORE INTO THE ONLINE EXPERIENCE LIKE ONE-STOP SHOPS WALMART, AMAZON AND TARGET. >> THE SPEED AT WHICH CONSUMERS ARE EVOLVING, THE WAY THAT THEY ENGAGE WITH RETAILERS AND BRANDS IS CHANGING DRAMATICALLY. IF YOU'RE NOT ENGAGING WITH THEM, THEY'RE GOING TO FIND OTHER PLAYERS THAT WILL. >> Reporter: THERE'S STILL THE CHANCE A BUYER SWOOPS IN WHICH COULD KEEP THE DOORS OPEN TO SOME STORES. BUT REGARDLESS, ANALYSTS SAY THIS IS THE END OF BED BATH & BEYOND AS WE KNOW IT. LESTER? >> EMILIE IKEDA, THANK YOU. >>> STILL AHEAD THE A.I. REVOLUT >>> WE'RE BACK NOW WITH AN EMPOWERING NEW WAY ARTIFICIAL INTELLIGENCE IS HELPING PEOPLE WITH VISUAL IMPAIRMENTS BETTER NAVIGATE THE WORLD. IT'S AN EXPERIMENTAL APP WHERE HELP IS JUST A CLICK AWAY. ELLISON BARBER HAS TONIGHT'S "A.I. REVOLUTION." >> IT'S WEIRD WHEN THE DOG KNOWS MORE PEOPLE THAN YOU. >> Reporter: NEW YORK COMEDIAN BRIAN FISHLER LOST HIS VISION NEARLY 15 YEARS AGO DUE TO A PROGRESSIVE RETINAL DISEASE. >> GOOD BOY. >> Reporter: WESLEY, HIS GUIDE DOG, HELPS HIM NAVIGATE THE WORLD AROUND HIM. >> WHERE IS THE SHAMPOO? >> Reporter: BUT NOW ANOTHER HELPER RIGHT AT RYAN'S FINGERTIPS. >> THE SHAMPOO IS LOCATED ON THE BOTTOM SHELF TOWARD THE LEFT SIDE OF THE PICTURE. >> Reporter: BRIAN IS ONE OF ABOUT 100 PEOPLE BETA TESTING THE NEW A.I.-INFUSED BE MY EYES. DO YOU FEEL LIKE YOU HAVE A BIT OF YOUR INDEPENDENCE BACK WITH IT? >> ABSOLUTELY. ABSOLUTELY. IT'S VERY EMPOWERING. >> Reporter: SINCE 2015 BE MY EYES HAS CONNECTED BLIND OR LOW-VISION USERS WITH SIGHTED VOLUNTEERS WHO THROUGH VIDEO CALLS VERBALLY DESCRIBE WHAT THE USER IS FACING. >> I DON'T MIND ASKING FOR SIGHTED HELP BUT IT DRIVES ME ABSOLUTELY BONKERS. >> Reporter: NOW HE MAY NOT NEED TO. THE NEW A.I. TOOL IN BE MY EYES IS POWERED THROUGH GPT 4. LIKE AN EXCHANGE WITH AN ACTUAL PERSON BRIAN CAN TAKE A PICTURE WITH HIS PHONE AND FOLLOW UP WITH A QUESTION. >> WHAT'S IN MY REFRIGERATOR? >> Reporter: WITHIN SECONDS HE GETS AN ANSWER FROM THE VIRTUAL ASSISTANT WHICH BRIAN HAS PROGRAMMED TO SPEAK AT A RAPID PACE. WE SLOWED THE AUDIO DOWN FOR CLARITY. >> I CAN SEE THERE ARE SEVERAL ITEMS IN YOUR REFRIGERATOR SUCH AS A CARTON OF MILK, ALMOND MILK, SODA CANS, THE WATER FILTER PITCHER, HUMMUS AND VARIOUS PACKAGED FOODS. >> SO WHAT MAKES IT DIFFERENT FOR YOU VERSUS HAVING A SIGHTED VOLUNTEER? >> PRIVACY. A SIGHTED VOLUNTEER THERE ARE CERTAIN THINGS YOU DON'T NECESSARILY WANT THEM TO HELP YOU WITH. >> I HOPE WE CAN LAUNCH THIS INTO THE WORLD IN A COUPLE OF MONTHS. BUT WE'RE GOING TO MAKE SURE THAT IT'S WORKING REALLY WELL AND THAT IT'S SAFE AND EFFECTIVE. >> Reporter: MIKE BUCKLEY IS THE CEO OF BE MY EYES. >> WHY CHANGE SOMETHING THAT'S WORKING? WHY REPLACE PEOPLE WITH ROBOTS? WHAT DO YOU SAY TO THAT? >> BECAUSE IT'S WHAT OUR COMMUNITY WANTS. THERE ARE SOME PEOPLE WHO MAY NOT WANT TO CALL A PERSON. I TALKED TO A WOMAN WHO SAID I DIDN'T WANT TO CALL A VOLUNTEER TODAY BECAUSE MY KITCHEN WAS MESSY. >> Reporter: BE MY EYES HUMAN VOLUNTEERS WILL REMAIN JUST A CLICK AWAY, AND THE VIRTUAL ASSISTANT JUST LIKE THE APP CURRENTLY WILL BE FREE TO INDIVIDUALS WHO USE IT. FOR BRIAN THE A.I. IS NOW KEY TO EVERYTHING FROM PICKING OUT CLOTHES TO FINDING BUILDING NUMBERS. >> PLEASE WAIT. VIRTUAL VOLUNTEER IS WRITING A MESSAGE. >> Reporter: TO DECIPHERING A MENU. >> JALAPENO POPPERS $8.95 SERVED WITH CAJUN RANCH. CHICKEN DUMPLINGS $8.95 SERVED WITH TERIYAKI SAUCE. >> WHAT IS THIS? >> Reporter: AS ONE OF MORE THAN 250 MILLION PEOPLE IN THE WORLD WITH VISUAL IMPAIRMENT, BRIAN SAYS THE TOOL HE'S TESTING IS SIMPLY -- >> LIFE ALTERING. HAVING THIS KIND OF INFORMATION IN THE PALM OF MY HAND, IT'S JUST GOING TO CHANGE SO MANY THINGS. >> Reporter: ELLISON ANNE THOMPSON, NBC NEWS. >> AND THAT IS "NIGHTLY NEWS" FOR THIS MONDAY. JOIN US TOMORROW NIGHT WHEN I SIT DOWN EXCLUSIVELY WITH THE PRESIDENT OF SOUTH KOREA. THANKS FOR WATCHING, EVERYONE. I'M LESTER HOLT. PLEASE TAKE CARE OF YOURSELF AND EACH OTHER. GO