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We've been hearing about these for a few years now, but now they're real. You can drop these tiny sensors in any environment, where they'll report back on enemy movements and other news for up to 180 days. They actually create a mini mesh network and share data and video with each other and with troops on the ground. Says one surveillance wonk:

"We've learned that occasional or periodic snapshots don't tell us enough of what we need to know. In order to really understand what's going on we have to observe our adversaries and their environment 24 hours a day, seven days a week, week-in and week-out."

No duh.

Mini-Sensors for "Military Omniscience" [DefenseTech]