The case of the bomber who terrorized Austin, Texas until he detonated himself is highly unusual. His methods, for instance, are atypical even of previous serial bombers.
Nevertheless, this case proves, for example, the results that can be achieved simply by allowing law enforcement to do its job — to be "the good guy with a gun" that the Left likes to mock.
For those of us on the civilian side, the lessons are equally clear.
Always remember that these days, the front door of terrorism is the front door of your house.