"It takes me like a half an hour to shave my father because I have to be so careful," a middle-aged man declares.

The man, identified as New Jersey native Kristian Rex, presses the razor to his elderly, disabled father's face — a face he loves. With great care, he glides the blade across his father's chin, upper lip, and cheeks, taking pains to listen and follow instructions.

"He's really particular about his sideburns." he says, as his dad smiles.