The use of dry air to preserve and protect various materials has been in practice for thousands of years. Natural dehumidification by locating in a dry climate, is frequently an optimal solution. The Egyptians have long known the benefits of using the dry desert climate to protect and store their national treasures. The state-of-the-art in dehumidification technology includes cost-effective, self-rejuvenating dehumidification equipment. Known as the Desiccant Wheel, this technology utilizes a desiccant impregnated honeycomb-construction wheel. Desiccant Wheel technology has resulted in reduced size (portability), reduced power requirements, improved maintainability and reliability due to few moving parts, and simple operation with minimal training. Moisture induced faults and corrosion significantly degrade avionics systems and aircraft readiness. Application of Desiccant Wheel Dehumidification technology to operational aircraft has increased system Mean-Time-Between-Failures (MTBF) by 290per thousand and reduced operation and maintenance costs by 20per thousand for Scandinavian Air Forces. This technology has increased maintenance productivity and is now being applied to U.S. military operational aircraft.