In the spring of 2009, Reitman directed "Up in the Air" starring George Clooney. "Up in the Air" is based on a novel written by Walter Kirn about a corporate downsizer who travels from city to city and is fanatical about collecting his ten millionth frequent flier mile. The film features real-world characters cast from the ranks of the recently downsized. "Hidden within a film that seems to be about corporate termination and the economy is a movie about the decision whether to be alone or not," noted Reitman," in an interview conducted just prior to the film's nationwide release. Sheldon Turner and Reitman's "Up in the Air" screenplay won the Golden Globe Award for best screenplay in 2010.