ILC Dover, LP (also known as ILC) is an American special engineering development and manufacturing company based in Frederica, Delaware. ILC specializes in the use of high-performance flexible materials, serving the aerospace, personal protection, and pharmaceutical industries. Best known for making space suits for NASA, ILC outfitted every United States astronaut in the Apollo program, including the twelve that walked on the moon. ILC also designed and manufactured the Space Suit Assembly portion of the Extravehicular Mobility Unit (EMU), worn by astronauts during performance of extra-vehicular activity (EVA) on Space Shuttle missions and on the International Space Station. Other ILC products include the airbag landing devices for Mars Pathfinder and Mars Exploration Rover (MER) missions; lighter-than-air vehicles, including airships, aerostats, and zeppelins; chemical, biological, radiological, and nuclear (CBRN) masks and hood systems; and flexible powder-containment solutions for the pharmaceutical industry.