Commander in Chief was an American drama television series that focused on the fictional administration and family of Mackenzie Allen (portrayed by Geena Davis), the first female President of the United States, who ascends to the post from the Vice Presidency after the death of the sitting President from a sudden cerebral aneurysm. The series began broadcasting on ABC on Tuesday, September 27, 2005, at 9 p.m. Eastern Time, although most countries outside North America began screening the series in mid-2006.