I did not want to avoid service. I did realize reservists could be called up, and that it was something that I wanted to do.

Generally, social networking sites can be hugely promising and beneficial in opening new friendships and vistas and knowledge of the world, but they are also fraught with peril, when young people are reckless or headless.

Still, there may be technologies that are very useful in identifying people over the age of 18 because they have all kinds of identifying characteristics, while those same tech may be useless for 12- and 13-year-olds.