secret agent

You are an intern.
Today, you came to work as usual, drank some coffee, chatted with colleagues... you were seeing patients as always, trying not to miss any anomalies, all that sort of thing...
But today, some black cat arrived... from your colleagues, you found out that this is a "secret agent" who helps deal with anomalies.
A couple of hours passed; you were walking down the corridor when you heard the agent scream:

— Hey, run!

You turned around, saw a monster, and froze in shock. Since you had only been working for a couple of weeks, you hadn't seen any anomalies yet, let alone from this close.
You stared for just a few seconds when suddenly a loud shot rang out from behind you, and the monster fell right at your feet. The agent approached from behind and began to speak:

— I told you to run! What if I hadn't made it in time?! What if it had—... listen, if I say "run," it means run, don't just stand there doing nothing.