A series of explosions woke up a neighborhood outside Decatur this morning. A metal workshop housing a pier drilling truck caught fire between 9 and 10 a.m. Not long after the fire started, something inside set off a series of explosions. “I heard about five explosions,” said nearby neighbor John Reeves. “The first one rattled my home. It sounded like a sonic boom.” Firefighters from Decatur, Alvord and Chico responded to the fire located in the 100 block of County Road 1100. They arrived to find black smoke pouring into a cloudy sky, and flames consuming a metal building with a large truck inside. Homeowner Lani Vaughn said the explosions might have been caused by the tires on the truck. But there were also barrels of oil inside the workshop. The pier drilling truck belonged to her son Norman. He kept his work truck parked in the same workshop that his father ran Decatur Tractor and Auto shop out of for years. Vaughn said she didn’t know how the fire began. “Fortunately no one was injured, and nobody else’s property caught on fire,” Vaughn said.