By Lynette Rice
Updated February 12, 2009 at 12:00 PM EST

FX announced today that it has ordered a sixth season of Rescue Me, the Denis Leary drama that focuses on the personal and professional lives of New York City firefighters. The drama will begin its fifth season on April 7 and run over a 23-week period on the cable network, with the season finale scheduled for Tuesday, Sept. 8.