We have a guy that comes into my work and works on the big industrial motors and drives. AC/DC all kind of crap I don't begin to understand.
He works for an electrical motor service, but he is their only guy who understands all that stuff in use. Travels all over the eastern half of the US+. About to retire. Our maintenance guy is wotried sick, nobody to replace him.
Parents who say they have good kids..Usually don't!