1. fire a fire-suppression action in which the aggressiveness of the attack is made consistent with the safety of the fire fighters and the public and with the values to be protected 2. entomology primary host selection and establishment of a focal point by bark beetles (termed pioneer beetles) for subsequent (secondary) attraction and aggregation by beetles in sufficient numbers to colonize a tree —note multiple attacks are necessary to overcome tree defenses; in many species, individuals of one sex initiate attacks —see mass attack, primary host selection, secondary host selection This definition last updated 10/28/2008