Will know where they are and how healthy
The US Defense Advanced Research Projects Agency has announced plans to create nanochips for monitoring troops health on the battlefield.
The sensors would be injected into soldiers and aim preventing illness and disease. It would be more effective to track them if they got lost. Of course there are a lot of people in the US who are against putting computer chips inside them.
While some object on the grounds that it means that the government can locate you and can monitor you, others think that the idea was a trick from by the Antichrist which was predicted by the Bible. DARPA is calling the effort "a truly disruptive innovation," that could help the US fight healthier and more efficiently than its adversaries.