[Well that's, he stops - the young man seems to be caught up in a circle of bad thoughts. He has to be careful, both to keep him from panicking more and to not take up the entire class time]

It's nothing like that,

[Lord help him, he is bad at reassuring people who aren't professional soldiers]

but - Nightfall is - [don't say probably, that will make it worse] - the reason, and no matter how dire it seems like, it can be overcome.