In the Line of Fire movie plot

Frankis a veteran agent of the White House Secret Service who witnessed the assassination of President Kennedy. The new task he accepted this time is to be responsible for the safety of the president during his campaign speech. The Secret Service received intelligence that someone would assassinate the President during the president’s visit, and the assassin who claimed to be "Bush"played byactually called Frank several times to his residence and office. The president went to Chicago to give a speech, and Frank accompanied Miss Reilesplayedwho was also an agent . At the meeting with voters, "Bush" who got into the crowd created a false alarm, and Frank's misjudgment made the president a big embarrassment in front of the voters, and Frank was ordered to leave the presidential guard. Fortunately, however, Frank and Rilis had a love affair in their joint work. After Frank returned, Chief Sam advised him to retire, but Frank insisted on finding the assassin. Finally, Frank found a clue to "Bush", his real name is Lille, and the CIA is also investigating him. Lille knew all about Frank's past, and deliberately left clues to let Frank fall further into his plan of assassination. The two opponents who regarded him as dead fought a battle.