U.S. Air Force Tech. Sgt. Christopher Zinc, 146th Aircraft Maintenance Squadron, California Air National Guard, washes fire retardant off of a C-130J Hercules after a day of firefighting at Dyess Air Force Base, Texas, April 26, 2011. The fire retardant is highly corrosive, so it needs to be washed off as soon as possible to prevent damage to the aircraft. (U.S. Air Force Photo/Staff Sgt. Eric Harris)