Plot summary
In China, an impaired Bartlet is having trouble sitting through meetings following his MS attack. In Washington, a NASA functionary warns that an asteroid could strike Earth, while Josh wonders who should be the next guy to occupy the Oval Office and puts off a talk with Donna about her future until she finally quits her job. Note: The episode title refers to a hypothesized period of extreme cold weather in the event of an asteroid or comet striking the surface of the Earth.
Credits
Adapted from Wikipedia contributors, The West Wing season 6. HTML formatting and reference markers removed.