ATF agents out of Kansas City are in charge of inspecting Missouri’s dozen or so fireworks factories. ATF Supervisor Bob Mosley says they look most closely at what he calls “magazines,” where the firework powder is stored. They make sure they are properly made and spaced far enough apart that one wouldn’t set-off the others if it exploded. He says they also try to make sure during their annual inspections that all of the explosive powder is accounted for. Mosley says the production process is the most dangerous part but the ATF doesn’t regulate that.