One of the executive-level leaders in many larger fire departments is the battalion fire chief. Typically, a battalion fire chief has years of experience in the tasks necessary to the smooth running of a fire department.
The SYNC computer, which Ford calls the Accessory Protocol Interface Module (APIM), is housed separately from the head unit, called the Audio Control Module (ACM), and interfaces with all vehicle audio sources as well as the high-speed and medium-speed vehicle CAN-buses.
That is, a module key is used to protect user authentication tokens. Such keys have no passphase, and can be accessed by any application that is connected to the HSM device within the appropriate security domain. Note that this description is specific to the Thales product line.