ATR is a diversified engineering firm focused on providing high quality products and engineering and technical support services in both the public and private sector markets. The firm specializes in a range of R&D and specialty engineering services, prototypes and products in three interlinked business units: the Engineering and Systems Division, the Automated Systems and Machines Division, and the Robotics and Control Systems Division. The firm offers modeling and simulation, electromagnetic measurement, system safety, logistics support, robotics and control, and systems automation solutions. The Engineering and Systems division supports various aspects of weapons system development, including warhead design, weapons effects analysis, explosives and systems safety, testing support, component acquisition, and product-ability studies. It also supports in the areas of underwater electromagnetic signatures, program and facility management, modeling and simulation, and technical writing. The Automated Systems and Design and Fabrication division provides prototypes, the United States postal systems; and USPS engineering devices. The Robotics and Control division engages in the development and production of robotic and material handling automation systems for structured and unstructured environments.