Fighting the Silver Dollar Fire on and near the Hanford site from the air was abruptly halted after a drone was spotted near the fire line.

Three helicopters involved in fighting the fire were immediately grounded because unauthorized drones in any airspace are dangerous.

Twitter - Silver Dollar Fire

Fire crews have a zero-tolerance policy on drone flying around a fire perimeter and they will always ground their crews even if it means the fire continues to grow and spread.

Silver Dollar Fire Facebook

At this writing, the fire is still over 20,000 acres and about 65-percent contained.

NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |