42 Technical consultation in the field of aerospace engineering; Engineering; engineering services, namely, engineering in the field of satellites; technical consultation in the field of engineering relating to satellites; technical consultation in the fields of aerospace defense, aerospace security, unmanned aircraft systems, remote sensing, sensors, aerial intelligence surveillance; consultancy in the fields of internet security, data security, computer security, and cyber security; computer software development and consultancy; engineering services, namely, engineering in the fields of electronic warfare, geolocation and direction finding; technical consultation in the field of engineering relating to electronic warfare, geolocation and direction finding; computer programming for others; computer programming and software design in the fields of modern air combat environments (MACE), distributed interactive simulation (DIS), electronic warfare (EW), joint terminal attack controller (JTAC) and other simulation applications