The explosion, which left seven people missing, started a wildfire and forced some cities and counties to cancel or postpone Fourth of July fireworks shows.

The parents of three brothers — 18-year-old Jesus Ramos, 22-year-old Johny Ramos and 28-year-old Junior Melendez — faced the danger head-on, desperate to find their sons after the fireworks facility they worked at exploded.

Investigators have located human remains following an explosion at a Northern California fireworks warehouse, Yolo County said in a statement Friday.