The sequence in the movie has Della waiting and waiting for Felix to show up to the wedding. Her father gets frustrated and tells her that she has made a mistake! Unknown to Della, James Bond and her future husband Felix Leiter were after a notorious drug dealer named Frans Sanchez. Bond and Leiter watch Sanchez get away in a plane heading into Cuban airspace. Bond decides to not give up and the chase is on as he instructs the Coast Guard helicopter to start to chase the plane. With the winch and cable, 007 "catches" the plane and the helicopter pulls it in. Bond and Leiter Parachute down into Key West and land directly in front of St. Mary's Church just in time for the wedding.
Click on this picture. Is that Sanchez plane directly above the steeples of the church?
Trivia: The last picture was taken from the light house where a sniper shoots at Bond in the Hemingway house. Those pictures will come to Station C Canada in the future.