Crew chief

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The term crew chief can refer to several different things:

In auto racing, a crew chief is the head person on a pit stop. The crew chief's primary duties include developing car setups, configuring pit strategies, and receiving feedback from his driver about the car's handling. The crew chief has been compared to the head coach in other professional sports.
In the military, crew chiefs are backup crew members of various vehicles like tanks or aircraft.
In the Air Force and Army, crew chiefs organize all maintenance on aircraft. Perform pre-flight, post-flight and through-flight inspections. Launch and recover aircraft. Crew Chiefs can also work in Inspection shops or Aero Repair shops.
In Texas Aggie Bonfire, crew chiefs are responsible for organizing, supervising and leading their crews at Cut, Load, and Stack.