The alternatives to HUMINT, or human intelligence, include remote sensors that do the spy's work, but from a distance. The names given to these type of sensors are COMINT, or communications intelligence, SIGINT, signals, ELINT or electronic and IMINT or imagery intelligence. Of all these cool-sounding approaches to spying without spies, IMINT is perhaps the most important.
Imagery intel consists mostly of pictures and radars in spy aircraft and satellites. These provide amazing views of objects on the... READ ON