It took 9 hours to stop him from firing rounds. 127 rounds from a .40 handgun. This wasn't some 15 minute shooting spree. He was at it like it was his job. Hell, he probably took a lunch break.
It's in Georgia? I don't know how rural that specific area is, but for context I live in the city limits of a rather populous city but I'm in a rural district. And the jackwagons behind my house regularly target practice in their back yard. On a weekend, it can go on for an obscenely long time. We just try to tune it out.
Nothing in Marietta GA is rural; it’s all suburban. Not to say that he wasn’t on a larger piece of property, but it most assuredly isn’t in the country.