A United States airman on a search-and-rescue training mission out of Davis-Monthan Air Force Base in southern Arizona started a wildfire in southern Arizona Monday afternoon. The fire is burning about three miles north of Arivaca, which is very close to the Mexican border.

It started just after noon local time.

This from KPHO/KTVK out of Tucson, Arizona:

“As part of the training mission, an Airman on the ground attempted to signal an aircraft overhead in order to indicate his location and inadvertently started a fire,” according to a news release from Davis-Monthan.

The fire was 25 percent contained as of 8:20 a.m. Tuesday. The fire has burned about 1,400 acres of grass and shrubbery. According to Arizona State Forestry, seven engines and three crews are on the scene or have been ordered.

“The Air Force is cooperating fully with local authorities and a full investigation will be conducted,” the DMAFB news release said.