 SPOILER: In the first season episode "Mr. Willis of Ohio", the  President yells at his daughter Zoe about her being careless and  what the dangers to her could be. His off the cuff description of  her abduction (at a club in the bathroom, Secret Service agents  being shot in the head) is very close to the events that would take  place at the end of season four when Zoe is abducted from a bathroom  in a club and one of the Secret Service agents is shot in the head.