美联储年内首次加息，美股暴跌600点

TONIGHT THE TRAGIC HELICOPTER CRASH. OUR CREW REPORTING FOR NBC LOS ANGELES KILLED WHILE ON ASSIGNMENT. A BELOVED REPORTER AND SEASONED PILOT COVERING BREAKING NEWS OF A DEADLY BUS CRASH WHEN THEIR CHOPPER SUDDENLY WENT DOWN, KILLING ONE PERSON ON THE GROUND. THE NTSB NOW POINTING TO THIS VIDEO OF THE MOMENTS BEFORE AS KEY EVIDENCE. WE HEAR FROM THEIR HEARTBROKEN COLLEAGUES ABOUT. THE LEGACY THEY LEAVE BEHIND. MARKETS TUMBLING AFTER THE FIRST INTEREST RATE HIKE IN YEARS AND SIGNALING MORE COULD BE ON THE WAY.

PRESIDENT TRUMP'S FED PICK DEFYING HIS WISHES TO LOWER RATES. HOW THE PRESIDENT IS FIRING BACK. THIS JUST IN WHITE HOUSE CHIEF OF STAFF SUZY WILES ANNOUNCING THAT SHE'S CANCER FREE. DEADLY FLOODS, CREWS PULLING A DRIVER TRAPPED IN RUSHING WATERS. PLUS THE FAST MOVING WILDFIRES TRIGGERING EVACUATIONS, WHIPPING UP WORLDS OF FIRE. DUCT TAPE PASSENGER SPEAKS. THE MAN RESTRAINED ON A PLANE AFTE ALLEGED VIOLENT OUTBURST. WHY HE SAYS HE DOESN'T REMEMBER WHAT HAPPENED.

HOUSE OF HORRORS. THE CHILLING NEW DETAILS ABOUT FIVE MISSING WOMEN NOW LINKED TO THIS PHILADELPHIA HOME. WHAT WE'RE LEARNING ABOUT THE MEN WHO LIVED THERE. VIDEO OF A CARETAKER ALLEGEDLY POURING BLEACH INTO A WATER BOTTLE AND SERVING IT TO A DISABLED PATIENT. HOW HE WAS CAUGHT. NFL STAR TRAVIS KELSEY NAMED AS A VICTIM IN A MULTI-MILLION DOLLAR PONZI SCHEME. HOW HE ALLEGEDLY GOT RIPPED OFF. AND NOT THE GREATEST GUARD DOG, THE PUP, CAUGHT GREETING A HOME INTRUDER WITH A TOY.

NIGHTLY NEWS STARTS RIGHT NOW. THIS IS NBC NIGHTLY NEWS WITH TOM YASS. AND GOOD EVENING. WE THANK YOU FOR JOINING US ON THIS WEDNESDAY NIGHT. WE ARE TRACKING SEVERAL BREAKING STORIES RIGHT NOW, INCLUDING THE STOCK MARKET SHOCK HITTING YOUR 401KS, THE FED HIKING INTEREST RATES FOR THE FIRST TIME IN MORE THAN THREE YEARS, AND SIGNALING MORE COULD BE ON THE WAY. THAT SURPRISE SPOOKING THE MARKETS. THE DOW DOWN MORE THAN 600 POINTS ON THE NEWS.

WE'RE GOING TO HAVE MORE ON THAT IN A MOMENT, BUT WE DO WANT TO BEGIN WITH A DEADLY HELICOPTER CRASH THAT HAS HAD A TRAGIC IMPACT ON OUR NBC NEWS FAMILY. A PHOTOJOURNALIST AND A PILOT REPORTING FOR NBC LOS ANGELES WERE KILLED WHEN THEIR NEWS CHOPPER SUDDENLY FELL OUT OF THE SKY. A PERSON ON THE GROUND KILLED AS WELL. THIS IS THE MOMENT THE NTSB IS NOW INVESTIGATING JUST BEFORE THE CHOPPER CRASHED. THEY WERE CAPTURING SCENES FROM A SEPARATE INCIDENT, A DEADLY CITY BUS CRASH, AND VIDEO SHOWED AN AWFUL SCENE JUST SECONDS AFTER THE ACCIDENT.

HUGE FLAMES ERUPTING AS FIRST RESPONDERS RUSHED IN. WE'VE BLURRED A BODY THERE ON THE GROUND OF THE BYSTANDER WHO WAS KILLED. ON THE SCENE ARE REPORTERS REACTING IN REAL TIME. THESE IMAGES SHOWING EMOTIONAL MOMENTS FOR KNBC'S REPORTERS WHO WERE ON THE SCENE AS IT UNFOLDED. THE CRASH TAKING TOO SOON THE LIVES OF OUR COLLEAGUES, REPORTER ILIANA MORENO AND PILOT GEORGE MARCEAU. WE'RE GOING TO TELL YOU MORE ABOUT THE INCREDIBLE LIVES THEY LIVED LATER IN THIS BROADCAST.

WE START WITH STEVE PATTERSON IN LOS ANGELES TONIGHT. TONIGHT NTSB INVESTIG