Engineering -- Study and teaching -- United States 6 Chemical agents (Munitions) 5 Competition, International 5 Engineers -- United States 5 Automobile industry and trade -- Government policy -- United States 3 Automobiles -- Energy consumption -- Research -- United States 3 Chemical weapons disposal 3 more ... Chemical weapons disposal -- United States 3 Chemical weapons disposal--United States 3 Heat resistant materials 3 Materials -- Research 3 Partnership for a New Generation of Vehicles (U.S.) 3 Space debris 3 Tooele Chemical Agent Disposal Facility (U.S.) 3 Aeronautics -- Technological innovations -- United States 2 Airplanes -- Design and construction 2 Airplanes -- Materials 2 Airplanes, Military -- United States -- Maintenance and repair 2 Building, Bombproof 2 Chemical industry 2 Engineering -- Study and teaching (Continuing education) -- United States 2 Engineering design 2 Explosives -- Detection -- United States 2 Industrial design 2 Infrastructure (Economics) -- United States 2 Launch vehicles (Astronautics) 2 Materials science 2 Meteorological services -- Technological innovations -- United States 2 Meteorological services -- United States 2 Microelectronics -- Materials 2 less ...