Skip Rizzo (USC) and eMagin are very familiar with each other going back to the early days Virtual Iraq

The HMD that was chosen was the eMagin z800, with displays capable of 800 × 600 resolution within a 40◦ diagonal field of view (http://www.emagin.com/). The major selling point for using this HMD was the presence of a built-in head tracking system.

http://ict.usc.edu/pubs/Development%20and%20early%20evaluation.pdf