High grade night vision goggles proved their worth in law enforcement operations for two NYPD officers, as they stumbled upon horseshoe crab poachers in a nighttime helicopter exercise last May. They were able to do surveillance despite maintaining a 200 foot high hover, while the oblivious poachers continued to haul their catch into their boats. Night vision devices have really made strides in military and law enforcement use. First used in World War 2 for snipers, it has developed into a priority equipment for nighttime excursions and campaigns. Though once available only for military use, any popular military surplus store like Special Forces Gear, now keep them in stock, should you find the need to get night vision goggles. You can also get military grade survival gear from such stores, for those who need extra supplies for their deployment, or just a regular Joe planning ahead on camping trips and other activities. In the end, it's better to be prepared for any contingencies.

http://www.specialforces.com/blog/industry-news/reasons-to-buy-from-military-surplus-stores-efficient-law-enforcement-accomplished-with-night-vision-goggles.html