A Crew Chief is responsible for the day to day condition of the aircraft assigned to them. The best crew chiefs are assigned to fighter squadrons. Real crew chiefs have nothing what so ever to do with NASCAR. Why would they? Crew chiefs that fuck up really bad or show no talent work on helicopters or (GOD FORBID!) cargo aircraft.
Crew chiefs own their jet and if a pilot is really polite and not running late, the Crew Chief will allow the pilot to fly “his” aircraft. Pilots spend most of their time drinking and fucking off doing whatever pilots do between their occasional visits to the jet. Crew Chiefs live with their jet. They stay with their jet in blazing hot days, rain, snow, through the night, during air raids and mortar attacks. Crew chiefs make Postal Workers look like pussies.