It's not virtual reality, but it's not exactly reality, either.

NASA trains pilots with Fused Reality

NASA is developing a technology for pilot training called Fused Reality, which uses a special headset that combines real flying in a real aircraft with an overlaid simulation.

from FB-RSS feed for ASME (American Society of Mechanical Engineers) http://www.gizmag.com/nasa-fused-reality-train-pilots/39650/