During an interview, Hayes asks Cheney why he accepted the job of vice president. Cheney responds:
"If the president of the United States asks you to do something, you really have an obligation to try to do it, if you can."
Of course Bush wasn't actually president when he asked Cheney to fill the #2 spot, and one wishes, therefore, that Hayes would have probed a bit further.
On a separate note, while Cheney was the Secretary of Defense for Bush 41, his closest ally on defense matters was none other than Jack Murtha. When the Democratic Speaker of the House, Jim Wright, got into some trouble for confirming classified intelligence, he asked Murtha to smooth things over with the GOP by using Cheney as an intermediary.