Jump to save prisoner that injured his back
That scene at the beginning with Nicolas Cage and Val Kilmer in the flooded jail was poorly done and confusing. First, they walk in and the prisoner is in the cell, nearly drowning in the rising water. Then, Cage and Kilmer torment the prisoner (for reasons unknown) and threaten to leave him to die, and then all of the sudden Cage starts to disrobe, and jumps into the water (a stupid and unnecessary thing to do, particularly if he doesn't know what he's jumping into, or upon), and then the next shot is of a doctor examining an X-ray of a presumably injured back that leads to his addiction to painkillers and illicit drugs.
It's not at all clear why the jump injured him, or why it was necessary to jump. Poor directing and editing. Just another example of how cheaply shot and edited this film was.