 Authorities say it happened last week when they contacted a person believed to be selling aerial fireworks. That led them to a facility in Chandler, around 20 miles outside Phoenix, where officers found nine 40-foot shipping containers. Inside, 95 pallets with over 2,100 boxes of illegal fireworks. Police say the estimated value is over $1 million, and it took four semi-trucks to move the explosives. Charges are pending for the business owner, and an investigation is ongoing.