VIDEO: The small town of Cambria has an all-volunteer fire department and thought the 23 firefighters work full-time jobs they are on call 24 hours a day for emergencies, including the night of the deadly explosion at the Didion Milling plant. On May 31, the emergency call about the explosion at the plant woke the volunteer firefighters out of bed. Many of them know someone who works at the plant. All of them rushed to the scene without question, and what they saw that night, they'll never be able to forget.