Master Diesel Mechanic -Performs all in-house diagnostics and repairs, including major repair, overhaul, and failure analysis of all components. -Must be able to perform duties of all other classifications -Must be familiar with all tools, machines, and test equipment necessary and related to performing the duties for all classifications; and -Assists other classifications as necessary to continue training. Master Body Technician -Fabricates panels and rails, lays out dimensions and designs and performs general duties of Body Technician Class A. -Must be able to perform welding on steel, stainless steel, and aluminum. -Assists other classifications as necessary to continue training.