Head paladin's keycard

The head paladin's keycard is a quest item in Fallout: New Vegas.

Location
Can be acquired by pickpocketing it from the head paladin in the Hidden Valley bunker, who may be either Hardin or Ramos, depending on your choices during Still in the Dark.

Uses
The head paladin's keycard is one of the 3 keycards required to start the self-destruct sequence during For the Republic, Part 2, Render Unto Caesar, The House Always Wins, and Wild Card: Side Bets.