US History Trivia: What US President had the Secret Service codename of Lancer?

The U.S. Secret Service has been protecting Presidents since 1902, first protecting Theodore Roosevelt in the aftermath of three Presidential assassinations in a forty year span.  The service has given President's code names by which they are referred to, and these names can be subject to much interest from the general public.  So, off of Pocket Trivia: US History - What US President had the Secret Service codename of Lancer?  Was it Theodore Roosevelt, Richard Nixon, John F. Kennedy or Franklin Roosevelt?

The correct answer to this one is Kennedy.  The Kennedy mystique has been tied to Camelot and the related lore, so the name fit perfectly.

Typically, though not always, code names for the first family share the same first letter with the code name of the President (for example, Jackie Kennedy's name was Lace).  A complete list is as follows:

Harry Truman: General
Dwight Eisenhower: Scorecard or Providence
John F. Kennedy: Lancer
Lyndon Johnson: Volunteer
Richard Nixon: Searchlight
Gerald Ford:  Pass Key (how the heck did that one happen?)
Jimmy Carter: Deacon
Ronald Reagan: Rawhide
George H.W. Bush: Timberwolf
Bill Clinton: Eagle
George W. Bush: Tumbler or Trailblazer
Barack Obama: Renegade