Who is Cam Flanagan from Al Capone Does My Shirts and what is their importance?

Cam Flanagan is Moose's father. He is an electrician, who also works as a prison guard at Alcatraz. When his wife first asks for the move, Cam is willing to do whatever it takes to help Natalie. Over time, however, he comes to see the toll that his wife's tunnel vision has caused their family, especially Moose.