BECAUSE THEY SAY ONE OF THEIR CONSTRUCTION CREWS SPARKED THIS FIRE WHILE USING HEAVY EQUIPMENT. THERE ARE AN INCREASING NUMBER OF STORIES OF SURVIVAL AND HEROISM, INCLUDING THE RESCUE OF THIS WOMAN WALKING BAREFOOT THROUGH HER COMMUNITY THURSDAY NIGHT BEFORE BEING PICKED UP. DID YOU EVER THINK YOU WOULD END UP IN A SITUATION LIKE THAT? >> ABSOLUTELY NOT. THAT'S ONE THING I HOPE I NEVER SEE AGAIN. >> Reporter: THE WOMAN WAS INTENSE PAIN ADDING ANOTHER 5 TO 10 MINUTES IN THOSE CONDITIONS MIGHT HAVE BEEN FATAL. THERE HAVE LUCKILY BEEN NO DEATHS IN ASSOCIATION WITH THESE FIRES AND YOU LIKELY PREVENTED ONE. >> THAT FEELS GOOD. >> Reporter: 5 MILLION PEOPLE REMAIN UNDER RED FLAG WARNINGS. AN EMERGENCY DECLARATION AFTER TWO COUNTIES AFTER TOURING THE FIRE ZONE. >> IT IS HARD TO PUT IN WORDS. >> Reporter: THE MARTIN FAMILY LOST THEIR HOME, WATCHING IT BURN FROM A NEIGHBOR'S NEST CAMERA. >> IT IS HARD TO LOSE ALL OUR MEMORIES. >> Reporter: FIRES HAVE DESTROYED HUNDREDS OF HOMES. IT COMES AS THE 4.7 MAGNITUDE QUAKE HITTING JUST WEST OF LOS ANGELES. ONE OF SEVERAL TO HIT THE AREA IN RECENT WEEKS. EXPERTS WARN AFTERSHOCKS ARE LIKELY IN THE COMING DAYS. MEANWHILE, SUSPECTED ARSONIST, JUSTIN HALSTENBERG IS ACCUSED OF STARTING THE LINE FIRE THAT