Bodies of 19 Firefighters Killed in Arizona Wildfire Recovered, Taken to Medical Examiner's Office

July 1, 2013 — -- The bodies of 19 elite firefighters overtaken by a raging wildfire in central Arizona were recovered and taken to the Maricopa County Medical Examiner's Office today, Prescott Fire Chief Dan Fraijo said.

The Yarnell fire killed 19 of 20 members of the Granite Mountain Hotshot Crew, who ranged in age from 21 to 43 years old.

Complete List of Names of Firefighters Killed in Arizona Wildfire

Fraijo said the only member of the crew who was not killed by the inferno was on an assignment away from the incident. However he didn't know where the firefighter had been deployed.

"He feels terribly and we all feel terribly," Fraijo said at a news conference this afternoon. "Unfortunately, we have very few words to express that kind of sorrow."

When the 19 men battling the wildfire had no place to turn, authorities said they deployed tent-like safety shelters in one final chance at survival.

"They're a last resort," National Interagency Fire Center spokesman Ken Frederick told ABCNews.com today.

"That would be where you simply have no way to get to a safety zone and you realize to save your life, you're going to have to deploy the shelter," he said.

"Often, that kind of scenario means you just have very few moments left to get in your fire shelter. Nobody wants to get in one," Frederick said.

Authorities believe the wildfire began with a lightning strike Friday in Yarnell, Ariz., about 90 miles northwest of Phoenix, and spread to at least 2,000 acres Sunday amid triple-digit temperatures, low humidity and windy conditions. By early today, the Yarnell fire had tripled in size and was 6,000 acres, according to Arizona incident commander Mike Reichling.

"I said last night that my heart was breaking. I can't even imagine how the friends and families feel," Arizona Gov. Jan Brewer said at a news conference today. "It's unbearable for many of you, but it's is unbearable also for me.

"For now, we mourn. Consider this: The fire claimed more lives than any single disaster since 9/11," an emotional Brewer said. "Just as we remembered the brave men who ran into the twin towers, we will also remember the men of the Granite Mountain Hotshots."

Fire shelters became mandatory safety equipment in the 1970s and have been used ever since. The devices are made of fiberglass and aluminum that together create "basically a personal tent," Frederick said.

"During a fire entrapment, a firefighter can take it out if its case, flap it open and then crawl underneath it," he said. "What it does is reflect away radiant heat and trap cool, breathable air for the firefighter."

Firefighters are trained to be able to deploy the shelter in about 30 seconds, Frederick said, adding that they have saved hundreds of lives.

If at all possible, Frederick said, a firefighter would rather use an escape route to get to a safety zone than have to get out the fire shelter. He was a firefighter for 13 years in Washington and never even took out his fire shelter, much less deployed it.

Unfortunately, the shelters do have limitations. They cannot withstand prolonged extreme heat, which can cause the aluminum to delaminate from the fiberglass. A wind event similar to what officials believe may have occurred in Yarnell, combined with hot, dry and windy conditions, can be a worst-case scenario for even the most experienced firefighter.

"You base your actions on what the fire is doing and what you expect it to do, but if that changes rapidly and unexpectedly, that's the worst kind of situation for a firefighter," Frederick said.

The 19 deaths amounted to the greatest loss of life for firefighters in a wildfire since 1933 when the Griffith Park fire in southern California claimed the lives on 29 firefighters, according to the National Fire Protection Association.

It is also the deadliest day for U.S. firefighters since 9/11, when 340 died.