▁sur ger ies . ▁They ▁also ▁can ▁perfect ▁their ▁techniques ▁in ▁a ▁real - time ▁simulation ▁in ▁a ▁risk - free ▁environment . ▁ ▁Military ▁training ▁Virtual ▁reality ▁head sets ▁have ▁been ▁used ▁by ▁the ▁United ▁States ▁Ar med ▁Forces . ▁It ▁is ▁a ▁particularly ▁useful ▁tool ▁for ▁training ▁military ▁personnel ▁without ▁putting ▁them ▁in ▁harm ' s ▁way . ▁ ▁The ▁virtual ▁reality ▁head set ▁allows ▁the ▁military ▁personnel ▁to ▁interact ▁with ▁virtual ▁reality ▁people ▁to ▁make ▁it ▁feel ▁real . ▁They ▁can ▁talk ▁to ▁one ▁another ▁and ▁do ▁varying ▁actions ▁to ▁make ▁the ▁virtual ▁reality ▁world ▁feel ▁like ▁they ▁are ▁actually ▁in ▁that ▁situation . ▁There ▁are ▁also ▁dis adv antages ▁and ▁advantages ▁when ▁military ▁personnel ▁use ▁the ▁head set . ▁The ▁dis adv antage ▁is ▁the ▁head set ▁is ▁made ▁for ▁an ▁ind oor ▁area , ▁with ▁a ▁cool ▁environment , ▁and ▁away ▁from ▁any ▁heat , ▁so ▁when ▁military ▁personnel ▁has ▁just ▁the ▁head set ▁on , ▁no ▁military ▁equipment , ▁it ▁is ▁not ▁like ▁their ▁basic ▁training . ▁The ▁advantages ▁consist ▁of ▁repeating ▁the ▁situations ▁multiple ▁times ▁and ▁the ▁cost ▁of ▁having ▁the ▁head set ▁is ▁less , ▁due ▁to ▁no ▁military ▁equipment ▁being ▁needed . ▁ ▁See ▁also ▁ ▁Aug ment ed ▁reality ▁head set ▁Com parison ▁of ▁virtual ▁reality ▁head sets ▁ ▁References ▁▁ ▁Category : Comput er ▁peri pher als ▁▁ ▁Category : American ▁invent ions ▁Category : 1 9 9 4 ▁introdu ctions <0x0A> </s> ▁Ch est nut ▁R idge ▁Park ▁is ▁a ▁