Night Vision Goggles Explained: How do they work?

source.. http://www.prepperssurvive.com/night-vision-goggles-explained/

This is one piece of equipment that you may want to consider adding to your arsenal of protection preps. Before the days of electricity, when war was waged with swords and muskets, battles would end when the sun went down because no one could identify friend from foe. […]

The post Night Vision Goggles Explained: How do they work? appeared first on Preppers Survive.