Luckily they have done this many times and algorithms do a lot of the work. Funny enough, when we were shot gunned we had a brother shot gunned to his brother’s company. He was a firstie, so they left them both. Just ensured he wasn’t in the same chain of command or his brother’s room mates. It worked out fine. That same year, I had a 4/C in my squad who was the sister of my squad mate from Plebe Year. It’s a small world. It’s also why those about to start this journey need to learn to never speak ill of someone and always been professional. You never know who are speaking to or their connections.