HeadOfPersonnel : Fire the laser pistol into the air to grab attention

You take some charge of the situation. There are rules about how this should be handled and you're going to apply at least one of them. The others quiet down a little, albeit this is more of a transition to a simmering bloodlust rather than a raging inferno.

HeadOfPersonnel: Code 206-205-106, moderate infractions "hooliganism", "rioting".
HeadOfPersonnel: Unenforced due to emergency situations. Do not make me enforce it.
HeadOfPersonnel: Provide information on the workplace hazard.

Codes 408-407-508 and 411-509 implore the recovery of vault materials that the Operator is likely taking, and also killing the Operator in question. But code 206-205-106 demands they disperse an unauthorized gathering with intent to disrupt things. Got to figure out which one to apply.
Some of these crewmembers sure have some bloodlust, though. Aside from some who appear to have been scared straight, somehow.

StaffAssistant: Escape! RedGiant is gonna kill us if we don't!
Chemist: I'm not escaping when that bastard is cornered in there!
HeadOfPersonnel: "Cornered"?
CargoTech: He's not cornered. He's got a choke point. We can't get in there without him shooting us, so we should just...
Scientist: Let the son of a bitch get away with it?
QuarterMaster: I actually think, yeah, that.
QuarterMaster: I think they'll kill you painfully if we don't.
Scientist: Shut the hell up! You're scared for no reason, there's a dozen of us and one of him!

Gotta assert the rules quick. Order them out of here or try to keep up the defense? You can wait to get details about what actually happened from the wounded.

HeadOfPersonnel : Defer to chain of command. Captain wanted to keep as much crew alive as possible