In the Line of Fire (1993)

Secret Service Agent Frank Horrigan is a fairly successful agent working for the president, yet the guilt of not being able to save President Kennedy back in the 60's still haunts him. When a lunatic assassin named Booth aka Mitch Leary begins to haunt and torment Frank with phone calls about his failure to save Kennedy and the threats to assassinate the president, Frank must take action and protect the presidents at all costs-even if it causes him humiliation. Does Frank have what it takes to take a bullet?