ATLANTA TONIGHT. MORGAN?

MORGAN? >> Reporter: JOSE, GOOD EVENING.

>> Reporter: JOSE, GOOD EVENING. YOU CAN IMAGINE THE SHEER TERROR

YOU CAN IMAGINE THE SHEER TERROR OF THOSE HOLIDAY SHOPPERS INSIDE

OF THOSE HOLIDAY SHOPPERS INSIDE WHEN THAT GUNFIRE RANG OUT.

WHEN THAT GUNFIRE RANG OUT. THE SHOOTING CAUSING

THE SHOOTING CAUSING PANDEMONIUM, SENDING A STAMPEDE

PANDEMONIUM, SENDING A STAMPEDE OF SHOPPERS RUNNING RIGHT OUT

OF SHOPPERS RUNNING RIGHT OUT THIS ENTRANCE BEHIND ME, SOME

THIS ENTRANCE BEHIND ME, SOME EVEN LEAVING THEIR SHOES BEHIND.

EVEN LEAVING THEIR SHOES BEHIND. TONIGHT, POLICE ARE STILL TRYING

TONIGHT, POLICE ARE STILL TRYING TO TRACK DOWN THAT GUNMAN WHO

TO TRACK DOWN THAT GUNMAN WHO OPENED FIRE.

OPENED FIRE. TONIGHT PANIC TERRORING THROUGH

TONIGHT PANIC TERRORING THROUGH AN ATLANTA MALL.

AN ATLANTA MALL. AS GUNSHOTS RING OUT SENDING

AS GUNSHOTS RING OUT SENDING SHOPPERS RUNNING FOR COVER.

SHOPPERS RUNNING FOR COVER. IT HAPPENED AT THE CUMBERLAND

IT HAPPENED AT THE CUMBERLAND MALL IN NORTHWEST ATLANTA WITH

MALL IN NORTHWEST ATLANTA WITH JUST 11 DAYS UNTIL CHRISTMAS.

JUST 11 DAYS UNTIL CHRISTMAS. THE MALL WAS PACKED, FILLED WITH

THE MALL WAS PACKED, FILLED WITH VISITORS TRYING TO FINISH THEIR

VISITORS TRYING TO FINISH THEIR HOLIDAY SHOPPING.

HOLIDAY SHOPPING. >> I JUST SAW PEOPLE RUNNING

>> I JUST SAW PEOPLE RUNNING OUTSIDE, BUMPING INTO CHAIRS,

OUTSIDE, BUMPING INTO CHAIRS, EVERYTHING.

EVERYTHING. SCARY.

SCARY. >> Reporter: THE MALL GOING ON

>> Reporter: THE MALL GOING ON LOCKDOWN.

LOCKDOWN. COBB COUNTY POLICE CALLED THE

COBB COUNTY POLICE CALLED THE INCIDENT A VERBAL ALTERCATION

INCIDENT A VERBAL ALTERCATION THAT STARTED AT THE FOOD COURT.

THAT STARTED AT THE FOOD COURT. ONE PERSON WAS SHOT AND IS

ONE PERSON WAS SHOT AND IS RECEIVING TREATMENT.

RECEIVING TREATMENT. THE SUSPECT IDENTIFIED BUT STILL

THE SUSPECT IDENTIFIED BUT STILL ON THE LOOSE.

ON THE LOOSE. [ SIREN ]

[ SIREN ] THE SHOOTING COMES AT A TIME

THE SHOOTING COMES AT A TIME WHEN AMERICANS ARE ON HIGH

WHEN AMERICANS ARE ON HIGH ALERT.

ALERT. JUST DAYS AFTER SIX PEOPLE WERE

JUST DAYS AFTER SIX PEOPLE WERE KILLED AT A JERSEY CITY MARKET

KILLED AT A JERSEY CITY MARKET AND FOUR MONTHS AFTER 22 PEOPLE

AND FOUR MONTHS AFTER 22 PEOPLE WERE KILLED INSIDE A WALMART IN

WERE KILLED INSIDE A WALMART IN EL PASO.

EL PASO. EVEN THE POLICE REMAINING

EVEN THE POLICE REMAINING VIGILANT.

VIGILANT. >> COBB COUNTY POLICE TRAIN

>> COBB COUNTY POLICE TRAIN FREQUENTLY ON ACTIVE SHOOTER

FREQUENTLY ON ACTIVE SHOOTER PROTOCOL.

PROTOCOL. WE RECENTLY ALL JUST WENT

WE RECENTLY ALL JUST WENT THROUGH ACTIVE SHOOTER TRAINING

THROUGH ACTIVE SHOOTER TRAINING AS A POLICE DEPARTMENT, SO WE

AS A POLICE DEPARTMENT, SO WE WERE ABLE TO PUT THAT TRAINING

WERE ABLE TO PUT THAT TRAINING INTO USE TODAY.

INTO USE TODAY. >> Reporter: SHOPPERS WHO WERE

>> Reporter: SHOPPERS WHO WERE INSIDE THE MALL STILL ON EDGE.

INSIDE THE MALL STILL ON EDGE. >> LAST THING YOU WOULD EVER

>> LAST THING YOU WOULD EVER THINK ABOUT SOMEBODY BEING SHOT

THINK ABOUT SOMEBODY BEING SHOT INSIDE A MALL.

INSIDE A MALL. >> I DON'T LIKE TO SHOP AT MALLS

>> I DON'T LIKE TO SHOP AT MALLS BECAUSE I ALWAYS WHEN I GO TO A

BECAUSE I ALWAYS WHEN I GO TO A MALL, I KIND OF HAVE ONE EYE

MALL, I KIND OF HAVE ONE EYE OPEN ANYWAY.

OPEN ANYWAY. >> 25 YEARS AGO THIS WOULD HAVE

>> 25 YEARS AGO THIS WOULD HAVE BEEN A SHOOTING IN A MALL

BEEN A SHOOTING IN A MALL BECAUSE OF A DISPUTE BETWEEN TWO

BECAUSE OF A DISPUTE BETWEEN TWO PARTIES.

PARTIES. AND ALL OF THE SHOPPERS WOULD

AND ALL OF THE SHOPPERS WOULD NOT HAVE REACTED THE SAME.

NOT HAVE REACTED THE SAME. NOW INSTINCTIVELY THEY REACT AS

NOW INSTINCTIVELY THEY REACT AS IF IT'S AN ACTIVE KILLER, THEY

IF IT'S AN ACTIVE KILLER, THEY RUN, THEY HIDE, THEY GET BEHIND

RUN, THEY HIDE, THEY GET BEHIND BARRICADES.

BARRICADES. >> YOU SAID THE SUSPECT IS STILL

>> YOU SAID THE SUSPECT IS STILL ON THE LOOSE.

ON THE LOOSE. ANY IDEA WHERE HE MIGHT BE

ANY IDEA WHERE HE MIGHT BE TONIGHT?

TONIGHT? >> Reporter: YEAH, JOSE, POLICE

>> Reporter: YEAH, JOSE, POLICE SAY THAT THEY DO KNOW THE

SAY THAT THEY DO KNOW THE IDENTITY OF THIS GUNMAN, BUT

IDENTITY OF THIS GUNMAN, BUT THEY HAVE YET TO SAY WHERE HIS

THEY HAVE YET TO SAY WHERE HIS EXACT WHEREABOUTS ARE.

EXACT WHEREABOUTS ARE. IN THE MEANTIME, A HEAVY POLICE