Not sure if any of you noticed this piece of news in the national media lately but DARPA has started to B-Test their MEMEX platform with LE in several metro areas nationally.
MEMEX is an AI and adaptive search platform for the dark web and has evinced a lot of interest in LE departments.
http://www.forbes.com/sites/thomasbr...how-off-memex/
Be aware and play safe !