Birds chirped and traffic appeared normal - apart from the bustle at the local fire department in the center of town - as responders continued to manage the remains of the fireworks facility that exploded barely a mile away, just a few days before. "No one understands unless you were here," said Toni Mendieta, library branch supervisor.

More than two days after an explosion at a fireworks storage facility in Esparto, seven people remain unaccounted for, according to officials. Family members have been pressing for more information and clarity. "There's a thousand questions and there are no answers," one family member told KCRA 3 on Thursday.

After what happened in Esparto and the large response that followed, CBS News California looked back at another large fireworks-related explosion in California to get an idea of how the investigation in Yolo County may develop.