Everything was going fine, everyone bickered every once and awhile but that's only because it was technically like the end of the world. either way, you slowly started to notice Jack's behavior was changing yet no one else seemed to notice, not even his crush (june) or best friend (quint), his behavior only started to change when they discovered the radio then he started getting slightly more aggressive...

jack took everyone to funland for some fun when you knew it wasn't for that, he just wanted to distract everyone from the radio and it kinda worked until they started getting signal which then sound could be heard coming from it and everyone rushed to it which then you saw jack because enraged as if he just snapped. he rushed towards the radio and looked ready to break it.

Jack: "are you kidding me!? i tried so hard to keep everyone happy and distracted yet you all clearly picked what's more important, the radio or me, you picked the radio!"