Water soluble substance that reduces frictional drag of solutions and dampens turbulent flow while being pumped through pipe or hose.

Thunderstorm in which negligible precipitation reaches the ground.

A burning compound or metal used to produce intense heat or flame, like a bomb.

A colorless, odorless, poisonous gas produced by incomplete fuel combustion.

Precipitation composed exclusively of water drops smaller than 0.02 inches (0.5 mm) in diameter.

Any substance except plain water that by chemical or physical action reduces flammability of fuels or slows their rate of combustion.

Any treatment applied directly to burning fuel such as wetting, smothering, or chemically quenching the fire or by physically separating the burning from unburned fuel.

Any treatment applied directly to burning fuel such as wetting, smothering, or chemically quenching the fire or by physically separating the burning from unburned fuel.

Hand held or aircraft mounted device designed to detect heat differentials and display their images on a video screen. FLIRs have thermal resolution similar to IR line scanners, but their spatial resolution is substantially less; commonly used to detect hotspots and flareups obscured by smoke, evaluate the effectiveness of firing operations, or detect areas needing mopup. 

Testimony or information not based on actual personal knowledge or observation, but dependent on inference of other facts or experience. For example, testimony that defendant's cigarette lighter was found in ashes of a fire.