Ronald Vail, a lead plane pilot for the U.S. Forest Service, flies a Beechcraft King Air aircraft during a Modular Airborne Firefighting System (MAFFS) training flight over North Carolina April 29, 2010. MAFFS is a fire-retardant delivery system inserted into H- and J-model C-130s to convert them into air tankers capable of carrying 3,000 gallons of retardant or water that can be discharged in less than five seconds. (U.S. Air Force photo by Staff Sgt. Michael B. Keller/Released)