The Integrated Helmet Audio-Visual System (IHAVS) project was originated and funded by the JSF Cockpit and Aircrew Systems Integrated Product Team, a joint service sub-team of the JSF Flight Systems IPT. The IHAVS project was conceived as a short-duration technology maturation and flight demonstration program. The JSF Flight Systems IPT provided overall project management, funding, and leadership throughout the entire integration and demonstration effort. The IHAVS project integrated head-mounted aural, verbal, and visual cockpit technologies, previously demonstrated individually, into a single synergistic system in a TAV-8B. A 25-event test operation was conducted to demonstrate the utility of this advanced integrated human systems interface for performing strike missions. IHAVS technologies included a GEC Viper II HMD system, a Polhemus helmet tracker, an Armstrong Laboratory 3-D audio system with ANR, a Smiths Industries IVM, and an LMA NITE Hawk SC TPOD. Three test pilots, one each from the Marine Corps, Air Force, and Navy, were selected to fly similar flight events.