During the Credits
There are no extras during the credits besides the background image which features the Black Ops‘ cover art of a soldier crouched down holding two guns.
After the Credits (spoilers)
As the credits stop rolling, the screen stays black as John F. Kennedy begins to talk. Kennedy can be heard saying “For time and the world do not stand still. Change is the law of life. And those who look only to the past or the present are certain to miss the future.” After that line, the screen clears to show JFK, Fidel Castro, Robert McNamara and Richard Nixon all talking about recent events. As they joke around, zombies begin breaking into their room. JFK reveals a stockpile of weapons and the four prepare themselves to take on the zombies. After the cutscene is over an extra zombie level featuring the four as playable characters is unlocked and playable.