I mean, a fear of heights is just a natural response to being in an unnatural situation. If anything it shows a level of self-preservation that can't always be countered with logic so even if I know we're perfectly safe, that won't necessarily make me any more calm about the situation. It's not even a bad reaction, necessarily — we watch horror movies for much the same reason and the chemical kick we get from putting ourselves in a scary situation can be just as addictive as caffeine or nicotine. It's the thrill of potential or imagined danger that makes these things into successful entertainment after all.
[ Reid. You're rambling. Calm down. ]
I'm fine. Okay? [ Squeezing her hand. Really, he wouldn't have gone if it was too unbearable. ]