A U.S. Air Force F-16C Fighting Falcon launches electronic countermeasure flares.

A Graham County woman who was severely burned by an item she found in the desert last week apparently set off a military aircraft flare, officials said.

On Jan. 31, the Graham County Sheriff’s Office responded to a call in Fort Thomas, a small community about 20 miles northwest of Safford, and found 49-year-old Diane Briscoe at home suffering from severe burns.

According to the Sheriff’s Office, Briscoe and her boyfriend found an unknown object in the desert north of the victim’s home.

Briscoe apparently touched the item with a knife and it detonated, severely burning the entire front of her body. After treatment by first responders, she was flown to a hospital burn unit in Phoenix.Β 

As of Tuesday, she was in critical condition at the Arizona Burn Center at Maricopa Integrated Health System.

The Sheriff’s Office notified the Explosive Ordnance Disposal unit at Davis-Monthan Air Force Base, but no other hazardous devices were found in the area. A team from the base visited the site Feb. 1 to gather information for an investigation, a D-M spokeswoman said.

β€œThe item that was found by the Graham County Sheriff’s Office Jan. 31 was confirmed to be a U.S. Air Force flare that is used on many types of military aircraft,” said 2nd Lt. Sydney Smith, adding that the specific type of flare has yet to be determined.

β€œThe source of the flare, how it came into the individual’s possession, and how it was activated remains under investigation,” Smith said.

Some hot-burning flares are dropped by military aircraft to lure away heat-seeking missiles, while others are used to mark or illuminate areas on the ground.

Fort Thomas is southwest of a military operating area, or MOU, used for pilot training by units including the Arizona Air National Guard 162nd Wing at Tucson International Airport.


Become a #ThisIsTucson member! Your contribution helps our team bring you stories that keep you connected to the community. Become a member today.

Contact senior reporter David Wichner at dwichner@tucson.com or 573-4181. On Twitter: @dwichner