Which document is NOT necessary to take a government vehicle off post/base?

The correct choice is the certificate of training, as it is not required to take a government vehicle off post or base. This document typically indicates that a driver has completed specific training, which may be necessary for certain types of operations or vehicle types, but it does not serve as a permission or authorization to operate a government vehicle away from military premises.

In contrast, a valid state driver’s license is essential because it establishes that the individual has the legal authority and competency to drive. The OF Form 346, which is the U.S. Government Motor Vehicle Operator's Identification Card, is also crucial as it certifies that the individual is authorized to operate government vehicles. Additionally, the vehicle dispatch document is necessary as it provides specific details about the vehicle, including its intended use and any relevant operational parameters.