After hearing advice from counselors, Randy and his wife decided not to tell their young children about the cancer until it's absolutely necessary. "Until I become symptomatic, until Daddy looks sick," he says, "there's no sense in telling our children."

One thing Randy says he has been doing is thinking of ways for his children to know about him and what he thought of them. "Dylan, my oldest child, he's just a natural scientist. He's already figured out that the questions are more important than the answers.

"Logan, he's my little Tigger. He's got this joy for life.

"And my little girl, Chloe, well the thing I want to tell her is—you're not allowed to date until you're 30! But when you do start dating, my advice on boys is [to] just ignore everything they say and just pay attention to what they do. If you do that, you're not going to make all the big mistakes."