I was married to a cop. They are people behind that uniform. They do NOT like drawing their gun for any reason, contrary to popular belief.
People always say "they're used to it" when it comes to car accidents, suicides, domestic violence etc…they aren't. That couldn't be further from the truth. I can't tell you how many times my ex came home absolutely destroyed after having to pull a dead body out of a wreck, or even something as simple as having to dispatch a deer that was hit by a car and suffering. Yes, it's all part of the job, but there's a reason why suicide is so high in that profession. They have a duty to run towards whatever everyone else is running away from. They carry that burden on their shoulders for the rest of their lives. It affects them, and hard. His first car wreck with fatalities, he didn't sleep for almost a week because it was all he saw when he closed his eyes.
I'm telling you all of this because it's important that you know that if you choose this method, it might put you out of your pain, but you're causing intense pain and trauma to a real person for the rest of their lives. Are you okay with that?