Barney94 said everything!
I will add, have your son do several spend the night programs with different outfits. They aren't pefect tells but it will help weed out one that is not a fit. If he is an Eagle Scout or in one of the other programs have him participate in that weekend and at least two other spend the nights. I wish my current cadet would have done more than one. He did not choose the outfit he stayed with either. My class of '11 did a spend the day with an outfit and then Aggie Eagle with another, he went with the one he stayed overnight with. It was a good fit then but it has changed and it would not be now.
The Corps is ever changing, some good, some bad. Outfit culture is the same with changes. I know the current E-1 is not the same one from 10 years ago. I doubt any of them are.
I will add, have your son do several spend the night programs with different outfits. They aren't pefect tells but it will help weed out one that is not a fit. If he is an Eagle Scout or in one of the other programs have him participate in that weekend and at least two other spend the nights. I wish my current cadet would have done more than one. He did not choose the outfit he stayed with either. My class of '11 did a spend the day with an outfit and then Aggie Eagle with another, he went with the one he stayed overnight with. It was a good fit then but it has changed and it would not be now.
The Corps is ever changing, some good, some bad. Outfit culture is the same with changes. I know the current E-1 is not the same one from 10 years ago. I doubt any of them are.