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Neighbors described hearing the fireworks.

“Geez. What is that popping noise?” a man said on a 911 call.

Another 911 caller, a security manager for the gated community, told dispatchers the fire was in the garage.

Darrin and Kimberly met in Lansing, Michigan, when they both worked as aides in the state legislature, her father-in-law said. Kimberly Campbell had graduated from Central Michigan University and Darrin Campbell had an MBA from the University of Michigan.

They lived in San Antonio, where Campbell was an executive with Pearl Brewing Company, before moving to Tampa.

At some point, he became senior vice president at PODS, the mobile storage company, and left in 2007. He was currently chief operating officer at Vastec, where he worked for the past six months.

Friends of the teens gathered Wednesday and released balloons with messages on them as a remembrance.

A former neighbor, George Connley, said Kimberly Campbell was “sophisticated and classy.”

“We know nothing of any problems,” Connley said. “The kids were outstanding children. This is very difficult to put our arms around.”