When flames from a burning building or other structure extend beyond the immediate area and ignite surrounding vegetation.

An ignition that occurs when materials geneate heat internally, often due to chemical reactions, leading to a fire without an external spark or flame.

The production, preparation, propagation, compounding or processing of a controlled substance, either directly or indirectly or by extraction from substances of natural origin outside legally authorized facilities. The term "manufacture" includes the act of growing.

A fence through which an electric current can be passed thereby giving an electric shock to any person or animal touching it.

A prescribed fire that has exceeded or is expected to exceed prescription parameters or otherwise meets the criteria for conversion to wildfire.

Process usually done with a maintenance of way vehicle or train to restore the profile and remove irregularities from worn tracks.

Replacement of railroad tracks or ties. Can be done with hand crews or a track renewal train.

An airplane, helicopter, or other machine capable of flight.