[As soon as she tries to bodily prevent him from carrying out his task, 76 bristles, looking like he's about a half second away from making her regret that decisions.]

The desks don't have weapons in them.

[The bodies have weapons on them. His figurative hackles are raised and he's settled into a defensive position, almost daring her to try and get physical with him.]

Unless you'd rather be unprepared when whatever killed these people comes after us.