Blackfive posted I Only Hang With Sheepdogs, an essay written by Lieutenant Colonel Dave Grossman, U.S. Army (Ret.).

If you have no capacity for violence then you are a healthy productive citizen, a sheep. If you have a capacity for violence and no empathy for your fellow citizens, then you have defined an aggressive sociopath, a wolf. But what if you have a capacity for violence, and a deep love for your fellow citizens? What do you have then? A sheepdog, a warrior, someone who is walking the hero's path. Someone who can walk into the heart of darkness, into the universal human phobia, and walk out unscathed.

And a paratrooper responds.