At a wildland fire a group of Chiefs, 3 or more, (usually Local Agency) that stand around and watch a wildfire running and getting bigger. They usually have their arms crossed and thoughtful expression on their faces.
Literally means fire cloud. These clouds are produced when a smoke column created by a wildland fire caps out (has an ice cap) creating in all intents and purposes a cumulonimbus cloud. These clouds have been known to produce lightning, hail, light precipitation and on occasions have been known to put out the fire.
Hey take a look at that pyrocumulus that is forming over the wildland fire.