They were highly skilled and trained to battle raging wild fires, but the flames proved too much for 19 elite US firefighters who were all killed doing their job.
It is the biggest loss of life among firefighters since the 9/11 terror attacks.
The wildfires started near the town of Yarnell, 80 miles northwest of Arizona'a capital Phoenix.
ITV News Washington Correspondent Robert Moore reports:
More top news
Leicester City's victorious players spotted a man who looks uncannily like star striker Jamie Vardy and invited him on to their bus.
Weather finally looking up this week.
If Donald Trump wins here tonight, it is a near-fatal blow to his rivals. Ted Cruz and John Kasich will be under pressure to drop out.