In the wake of the shootings in Las Vegas—in which bystander Joseph Robert Wilcox tried to take a shooter out and instead was himself shot and killed—Adam Weinstein offers a very thoughtful take on the notion of being a "good guy with a gun." A veteran and a gun owner, Weinstein describes himself as "one of those wannabe heroes"—but also details his growing doubts:

With the license, and the gun, came a host of new grownup worries. First: Who do you shoot, and when? ....

Over the years, even as I lived in a series of bad neighborhoods and sent the cops after a felon who threatened my family, my doubts about the usefulness of a firearm have compounded. What to carry? How to keep it concealed, but accessible? Keep it cocked and locked? Where would I leave it when going to a school campus, or a post office, or a courthouse?