When you think of missing person cases, you might imagine groups of volunteers scouring fields or search dogs sifting through a forest or even faces on milk cartons from a past life. But not all disappearances are landlocked. Some crimes are buried deep beneath cold water, which is why it takes a specially trained individual to search depths where no one else can or will go. To tell the unique story of these professional divers is none other than Bobby Chacon – former FBI Special Agent, as we...