Augmented Reality Training Systems Destined for Marine Schoolhouses (Photonics SA HMD, eMagin Inside)

"We're going to be focused on miniaturizing, ruggedizing, battery life, and improving the head-mounted display," Yates said. While a per-unit cost for the system has not been established, he said, "It's a fraction of the cost of ammunition that a single artillery battery would expend during a year of annual training requirements."

http://www.military.com/daily-news/2016/03/09/augmented-reality-training-systems-destined-marine-schoolhouses.html