A screenshot from the video below showing the exploding target that started what became the 46,000-acre Sawmill fire.
The United States Forest Service released video from its investigation of the origins of the Sawmill Fire.
As a gunshot rings out - apparently fired by expectant father and U.S. border patrol agent Dennis Dickey - the target explodes in a blue cloud, igniting the surrounding area in flames. But when they fired a rifle at explosive powder in a target, it ended in a fire that burned almost 47,000 acres.
It happened in April 2017, when the Tuscon couple invited friends and family to gather to watch them shoot a rifle at explosive powder in a target.
"Start packing up, start packing up", a man can be heard yelling as the blue cloud turned into flames. Firefighters from at least 20 agencies fought the fire for about a week, according to CNN affiliate KGUN-TV.
"I feel absolutely frightful about it".
Dickey was sentenced to five years' probation and ordered to pay $8.1 million in restitution; $100,000 up front with monthly payments thereafter.
The fire burned almost 47,000 acres of state land in a little more than a week.
Speaking in court, he told the judge: "It was a complete accident. It was probably one of the worst days of my life".
A news release from the US attorney's office said Agent Dickey will make an initial payment of $100,000, then make monthly payments after that.