Jun 21, 2012 10:09 PM
TUCSON - Smoke may be visible in parts of Tucson Thursday as firefighters battle a wildfire in Southern Arizona.
They're performing burnout operations to contain the Fox Fire in the Rincon Mountain Wilderness.
It's burned about 7,500 acres near Cascabel and is about 60% contained.
More than 200 personnel are fighting it.
The fire started Saturday.
It's believed to be caused by lightning.