AITA for shooting my brother in the shoulder after he killed my employees and tried to destroy my life’s work?

I (47M) got a new, high-paying job a few years ago but the problem is that the job in question is pretty odd and requires me to go on a business trip for 6 days a year. It’s not anything bad, don’t worry, but it’s certainly not any run-of-the-mill profession, so I figured that my brother (31M) would be all judgy about it because he’s a super by-the-book, holier than thou guy. Therefore, I kept my new job hidden from him, thinking that what he doesn’t know can’t hurt him, right?

Well, unfortunately 3 years ago my brother found out that I was missing while I was on a business trip, and somehow traced me to the island where I work. He killed two of my employees in cold blood (with a stolen gun at that!!), infiltrated the building, and stole important information that my competitors could use to destroy my business. Of course, even though he‘s my brother I couldn’t let him get away with that, so I gathered some of my tougher employees and chased him as he escaped. We cornered him on another island and I demanded he relinquish the stolen information stored on his phone and turn himself in for the murders he committed. My brother refused. I was super mad at this point because a few years ago I gave my KIDNEY to this guy and now he tries to ruin my life?! What happened to him to turn him into such a public menace? I moved forward to try to restrain him but at that moment, believe it or not, the bastard SHOT me in the shoulder with his gun. Shocked and scared he was gonna murder me too just like he did my employees, I did the only thing I could think of at the time. I raised my own gun and shot my brother in the shoulder, making him fall off the cliff and into the ocean below.

Now, you might think me heartless for doing such a thing to my own brother, but fear not, I didn’t kill him. In fact, I hired a fisherman to go fish him out and take him to a hospital right after, so he was safe. But that wasn’t the end of it. Even after my mercy and unearned generosity to the man who murdered my employees, my brother still didn’t let this thing go. For the next 3 years he stalked me, going from island to island trying to find where I was like some obsessive psycho. He got flak at his own job for it too and I heard he even got fired at some point, but that didn’t deter him. The guy even worked with some criminals and mercenaries to try to track me down, he’s crazy! But for some reason I’ve been told that I‘M the problem in this situation?! Help me out Redditors, please tell me that I’m not the only one who thinks I need to get a restraining order against my brother for his creepy actions.