Colin DemarestIllustration: Sarah Grillo/AxiosDefense-tech upstart CX2 plans to hire more people and accelerate development of its electronic warfare tools on the heels of a $31 million raise, executives told Axios.The big picture: Mastery of the electromagnetic spectrum is a life-or-death matter, and the U.S. has for years let its electronic warfare arsenal atrophy."We are in the position now of firing multimillion-dollar missiles at $20,000 drones and $10,000 jammers," CEO Nathan Mintz told Ax...