: Kelvin revealed a "fail-safe" key that could be used as a last resort to discharge the electromagnetic buildup if the button were never pushed. Island Events: Faith vs. Logic
: Desmond’s predecessor in the Swan Station who trick Desmond into staying by claiming the world outside was infected.
: Desmond accidentally killed Kelvin in a rage and, in his despair, almost failed to push the button on the day Oceanic 815 crashed.