In the episode where Deanna’s son is killed, he whispers something to Glenn - something about “....it was us” ??
That episode should be coming up on the marathon.
I don’t remember the exact quote, but Aiden basically admitted that it was his and Nicholas’ fault that the other 4(?) people got killed. I assume that they got scared and acted like Nicholas did and sacrificed the others to save themselves.
The three team members who died didn’t die because Deana’s son panicked, but because Deana’s son and his friend (who got to the truck) panicked.