Federal officials say a wildland firefighter has died after a physical training exercise.
The U.S. Bureau of Land Management says 33-year-old Terry Sonner of Hammett died Wednesday morning after collapsing.
Agency spokeswoman Jessica Gardetto says attempts by crewmembers to revive Sonner failed. The cause of death hasn't been determined.
Sonner began firefighting in 2001 and advanced to become the fire operations supervisor of the Hammett Guard Station Engine Crew in Hammett, about 60 miles southeast of Boise.
Gardetto declined to release the type of training the crew was doing when Sonner collapsed.
She says the BLM has appointed a team to look into the circumstances of Sonner's death.