Washington, D.C. (March 29, 2006) - VirtuSphere, located at the Naval Research Laboratory (NRL), is a nine-foot plastic ball that sits on wheels enabling unlimited rotation in any direction. The Office of Naval Research (ONR) is developing systems like VirtuSphere as part of a program called Virtual Technologies and Environments (VIRTE). A user, wears a wireless head-mounted display (HMD) that displays landscape, and can update continuously as the service member moves, by detecting changes in orientation. Much of the work with VIRTE focuses on the needs of the Marine Corps. U.S. Navy Photograph by John F. Williams