DARPA has long sought a heads-up display to give soldiers situational awareness without distracting them, and it looks like technology has finally caught up to that ambition. It recently unveiled a new ULTRA-Vis prototype at its DARPA Demo Days, saying the breakthrough was a holographic wave guide display. Similar to how the Oculus Rift headset works (but not in 3D), itll project color images locked to the terrain — even if you move your head — thanks to motion-sensing and GPS systems.