Fires deemed as threats are those that will exceed ten acres in size, totaling roughly $13,000 of damage (according to fs.usda.gov). The model uses data given once a fire has started to predict whether a fire might exceed ten acres and therefore require external assistance, obviously variable dependent upon whether a location already has the necessary supplies to topple it.
Approximately one in seven fires exceed ten acres, and unsurprisingly, require more external aid to combat them than the smaller ones
A random sample of 85,863 non-threat fires showed much fewer devastatingly long fires (>300 days) than the larger ones, and are consistently shorter in length (<200 days)