Did They Quietly Blame Jack?
One of scenes that I always wonder what everyone was really thinking, is the scene after the accident when Jim has to calm down both Jack and Fred, and Fred is kind of grilling Jack about being the one who pressed the button to trigger the explosion. Lets break down what everyone is saying, and what they might actually be thinking.
Fred: While he does challenge Jack on what the gauges read before he stirred the tanks, he doesn't say that until Jack ask him if he blames him. While Fred might still see Jack as the outsider and "the backup guy", I don't think actually blamed him. If anything he might have just kind of needed a scape goat at that moment, and Jack presented himself as an easy target.
Jim: And while he tells Jack to stop kicking himself in the ass, and reminds him that if he had been sitting in that chair when the call came in, then he would have stirred the tanks, is it possible he did blame Jack. Perhaps being the commander he knew he had to keep his crew together mentally, and couldn't have Fred pissed at Jack, and Jack blaming himself for it.
Jack: When he yells at Fred "IT'S NOT MY FAULT!" I don't think he's trying to convince Fred as much as he's trying to convince himself. And this is probably more due to him feeling like he's JV and doesn't deserve to be on the varsity team, and he screwed it up for everyone.