John wanted nothing more then to kick both of their asses currently, but they had more pressing matters ahead. Mary needed to be rescued and that was first priority and should have been the only thing on his mind. Both of his boys were defying him, he didn't know if he could reign them in the way he used too ever again either. It was a little depressing really. He watched Sam give him that look, and his own expression darkened.
If only you were a teenager again I'd- His thought process stopped short. He'd do what? Ruin them all over again like he had in the past? Instead of internally fighting himself he followed them toward the building and stood back to make sure nothing went wrong. He would always have their back no matter how things were going in the family. That's what they were. That was how family operated.
Just because they fought didn't mean much, besides lately that was all John, Sam, and Dean did. Fight and bicker. Deep, deep down they were still connected, and John didn't want to lose that again. He pulled one of his guns out of his jacket and watched Dean's back. Just incase Yellow Eyes had a few surprises waiting for them.
He double checked his weapon, and then looked back over his shoulder watching Dean chip away at the wood for a second. It could have been the last time they were all standing there together. John knew that. Yellow Eyes was what tore his family apart the first round, if it happened a second time he didn't know if he could deal with it.