Someone had to. When a person collapses all of a sudden, it's completely inappropriate to just disappear to leave nobody but a young girl to deal with the situation.

[Although, frankly, he's probably not the best candidate to handle this either. He's visibly shaken by all of this.] Like I would know where everyone ran off to! They probably just couldn't stand the thought of actually being useful in an emergency!

[Fortunately, he manages to quiet down for a minute to inspect the body. He gasps upon discovering something-] They're different!