> At least that way when you get yourself killed it won't be my fault
Somehow Sam always knows the wrong thing to say, and Dean's wince has barely broken ground across his increasingly poorly-hidden pained features before John's on Sam, has him pinned to the wall at the shoulders, is up in his face and yelling. “No one's going to die, got that? I didn't raise you boys, train you up to...”
He trails off, and Dean's moved around to the side and his hand's on John's arm, and manages a “It's okay, Dad, we...” before John shrugs him off and he stumbles a pace or two back, looking a little like a kicked puppy for the second or so before training kicks back in. Showing weakness is bad. But John lets go of Sam too, and steps back himself, shaking his head and hanging it slightly, turning away from the boys and running a hand over his face wearily.