I couldn’t find the target, but this room seems to be some kind of security hub. So far, it looks like there are Flood outside the bunker, in the underground tunnels, but the doors are sealed shut so there should be no problem.

[slowly acting maniacal] I shot him. I killed him! I did exactly what Command told me to do, and it felt so

Hey, you brought this on yourselves. Command knew about your little ‘search for information’. Apparently, that’s a big no-no, so Command offered me a lot of money to make sure there were no meddlers.