Unmanned autonomous systems (UAS) are high-tech, intelligent machines capable of traveling by air, land, or sea without a human crew on board. Thanks to advanced computing, sensing, and electronic technologies and mechanical design, UAS are versatile machines able to maneuver in diverse, and sometimes dangerous, environments. UAS can go into the heart of a storm or a spreading wildfire to monitor threats to human lives and property or travel through remote areas to gather environmental data. Other applications of UAS include mapping and data collection, hazardous waste inspection, search and rescue and entertainment.