SIGNAL Magazine is the only international news magazine serving the critical information needs of government, military and industry decision makers active in the fields of C4ISR, information security, intelligence, research and development, electronics, and homeland security. See more of our editorial topics. SIGNAL explores the art of the possible, expanding beyond new products and applications to include comprehensive coverage of programs and solutions. Every issue of SIGNAL focuses on a vital theme while providing other relevant news and information through special reports and stand-alone articles. High ranking leaders of government, military and commercial organizations are the primary sources for most SIGNAL articles. Their input is complemented by articles that also address management and user perspectives.