Ticking Timebomb

 refers to an unmarked quest in Fallout 3.

In Red's clinic in Big Town you find Timebomb lying in the operating room. You can revive him provided your Medicine skill is high enough (40+), netting you 5 caps. If Timebomb survives the super mutant attack then at the end of Big Trouble in Big Town he will give his Lucky 8 Ball. However, you can heal him after you defend Big Town from the super mutants, and not risk his life in the battle.

You also have the option of putting him out of his misery. Doing so gives bad karma, and a message calling you a callous bastard.

Reward

 * Lucky 8 Ball (increases Luck by 1)
 * 5 caps