The Pentagon's Defense Science Board released a report suggesting a pervasive system to observe and record activity in urban areas and hard-to-monitor settings across the globe -- in other words, they'd like to TiVo the entire planet for playback (or at least as much of it as they can for intelligence gathering purposes). The study mentions DVR-like technology that would be used to "run recorded time backwards to help identify and locate even low-level enemy forces," referencing the types of threats U.S. forces encountered in Iraq and Afghanistan. The proposal also seeks to minimize the use of human personnel, and instead, employ various autonomous monitoring methods, from tiny environmental data-collecting sensors to unmanned aerial vehicles. So basically, the plan is to keep a hawk eye on all areas of concern -- up to tens of thousands of square kilometers with targets as specific as an individual person, object, or activity. No word on if, or when, the military might be rolling this out.