A C-130 Hercules drops "fire retardant" from a Modular Airborne Fire Fighting System near Tucson, Ariz., May 8 to finalize MAFFS certification by the U.S. Forestry Service. Air Force Reserve and Air National Guard aircrews flew training missions from sun up to sundown in the annual event. (U.S. Air Force photo/Tech. Sgt. Alex Koenig)