Applications: Military pilots and aircrew wear flight suits made of over 92 percent Nomex to protect them from the possibility ofcockpit fires and other mishaps. Recently, troops riding in ground vehicles have also begun wearing Nomex. The remaining material is typically Kevlar thread used to hold the fabric together at the seams. In the U. S. space program, Nomex has been used for the Thermal Micrometeoroid Garment on the Extravehicular Mobility Unit (in conjunction with Kevlar and Gore-Tex) and ACES pressure suit, both for fire and extreme environment (water immersion to near vacuum) protection, and as thermal blankets on the payload bay doors, fuselage, and upper wing surfaces of the Space Shuttle Orbiter. It has also been used for the airbags for the Mars Pathfinder and Mars Exploration Rover missions, the Galileo atmospheric probe, the Cassini-Huygens Titanprobe, as an external covering on the AERCam Sprint, and is planned to be incorporated into NASA's upcomingCrew Exploration Vehicle. Nomex has also been used for its acoustic qualities, the first time being used in Troy, NY, at Rensselaer Polytechnic Institute's Experimental Media and Performing Arts Center (EMPAC's) main concert hall. A ceiling canopy of Nomex reflects high and mid frequency sound, providing reverberation, while letting lower frequency sound partially pass through the canopy. According to RPI President Shirley Ann Jackson, EMPAC is the first venue in the world to use Nomex for acoustic reasons. Nomex is also (like Kevlar) used in the production of loudspeaker drivers. Honeycomb-structured Nomex paper is also used as a spacer between layers of lead in the ATLAS Liquid Argon Calorimeter