When equipping NVG's to a combat helmet, there is no known way to activate the NVG's. No prompt is given anywhere. The goggles are active and have usable 9V batteries slotted. The only known way to use the goggles, is to hold them in the players hand, and look through them like a scope. Please help. I'd also like to receive any helpful information. Is this a bug? User error? Thanks.