Trying To Remember A Movie's Name?

I'm trying to remember the name of a movie but can't think of it for the life of me..... I can't even remember who plays in it. Its about a father who's a fireman and he dies on the job. His son becomes a cop and one day is able to talk to his dad from the past using his old radio. He's able to prevent his fathers death in the end. I thought it was a beautiful movie and would Love to be able to see it again.