I believe it's an LLC, so unless Sr personally guaranteed it's debts, they can't go after good cars, house etc.
That's assuming there was no misappropriation of funds.
For their sake I hope it's all legit, but it's a complex area....just looking at the houses and cars, I think OCC's (and the loan officer's) gonna have some explaining to do. Clever lenders are finding ways to "pierce the corporate veil" and make the borrower pay - especially with smaller companies like OCC. On the other hand, $1MM isn't all that much money these days -- time will tell....