When should NVGs only be used in conjunction with other navigational aids?

Using night vision goggles (NVGs) in complex terrains where situational awareness is crucial is necessary because these environments often involve obstacles, changes in elevation, and other hazards that can be difficult to navigate solely using NVGs. While they enhance visibility in low light conditions by amplifying available light, NVGs have limitations, such as a narrow field of view and reduced depth perception, which can hinder a user’s ability to accurately assess their surroundings.

When in complex terrains, it is vital to utilize other navigational aids, such as GPS, maps, or even conventional visual cues, to supplement the limited perspective that NVGs provide. These additional aids can help maintain spatial awareness and improve decision-making, ultimately enhancing safety and effectiveness in navigation.

In other scenarios, such as well-lit urban environments, adverse weather conditions, or direct line of sight situations, NVGs may not be as necessary or may be less effective. In well-lit areas, the amplification provided by NVGs is diminished, and in adverse weather, external factors like fog or rain can further obscure visibility regardless of the device used. In situations with a clear line of sight, one might rely on natural vision without the need for additional aids.