AeroVironment, Inc. is an American technology company in Monrovia, California, and Simi Valley, California, that is primarily involved in energy systems, electric vehicle systems, and unmanned aerial vehicles (UAVs). Paul B. MacCready, Jr., a designer of human-powered aircraft, founded the company in 1971. The company is probably most well known for developing a series of lightweight human-powered and then solar-powered vehicles. AeroVironment is the Pentagon's top supplier of small drones — including the Raven, Wasp and Puma models. They have signed a strategic partnership with Lockheed Martin Corp to develop their 'Global Observer' to provide "persistent airborne observation".