Scientists thought so. I mean when you're...faced with what Trespasser did. You still can't go into that part of the world. And when we came up with an idea for how to beat them...

[His face contorts. Sandwich] that'd be great. I just need...food and sleep. And I'll...

I won't be okay. But it'll be close.

[He has to admit that to himself.] I left somebody behind fighting one of those things.