Her son, Joel "Junior" Melendez, 28, was killed in the blast. Lupe said her strong words are directed at the fireworks company that employed her son and also at county and state officials, who have provided limited information in the investigation. Lupe wants her son to be remembered as a great father, brother and friend.

Three of the victims in the Yolo County warehouse explosion included two brothers and a stepbrother from the same family. The two brothers were also graduates from San Francisco schools.