A veteran firefighter was shot and killed while he was responding to a fire in Stockton, California, officials said Monday. Fire Capt. Max Fortuna was attempting to put out a dumpster fire near downtown Stockton when he was hit by gunfire, Stockton Fire Chief Rick Edwards said. The shooting remains under investigation. “This is my worst nightmare as a fire chief,” Edwards said. “My message to my firefighters is to be strong, my heart breaks with you but we will get through this.” Stockton police officials told local media that a 67-year-old man was detained at the scene in connection to the shooting. Authorities said they also recovered a gun that was allegedly used in the shooting Fortuna, who is survived by a wife and two children, is a 21-year veteran of the fire department. “Today is a tragic day and tragic day … for Max Fortuna’s family,” Stockton Firefighters 456 Union President …