Chase's face became pale, his brain stopped working after receiving this mind-blowing information.
Experimenting on HUMANS?
At first he thought maybe the guide was joking with them to scare them, but the guy seems completely serious, he does not look like the kind of guys that like to joke around especially while doing their job.
This can not be true.
Chase's dream was to join the SSL because he wanted to help make cures for incurable diseases, he wanted to save more lives and do something good for the humanity.
Experimenting directly on humans is the complete opposite of saving lives.
He tried his best to hide his shock, as he glanced at his friends only to find them as pale and scared as he was.
Mia looked like she is going to pass out at any second.