What is covered in TC 21-305-20?

The correct answer highlights the focus of TC 21-305-20, which is specifically dedicated to Night Vision Goggle (NVG) driving techniques and procedures. This training is essential for operators who need to navigate and operate vehicles under low-light conditions, using NVG systems to enhance visibility. Understanding these techniques is crucial for maintaining operational readiness and safety, especially in combat scenarios where visibility may be compromised.

The other choices, while relevant to vehicle operation and maintenance, do not pertain to the specific content of TC 21-305-20. This document does not cover manual operations for tracked vehicles, maintenance procedures for wheeled vehicles, or focused training on tracked combat vehicle driving, which are addressed in other training circulars or manuals. Thus, the emphasis on NVG techniques in TC 21-305-20 is critical for training that prepares soldiers for realistic and challenging operational environments.