Tampa, Florida -- One of Tampa Bay's biggest family events is coming back after two years.

Tampa Bay AirFest will soar over South Tampa's MacDill Air Force Base on March 22 and 23.

But MacDill isn't only getting ready for fun; they're also practicing for the rare chance something may go wrong.

During AirFest, the base adds even more safety measures than what's usually in place.

Still, they know that in the very rare event of a crash, the 100,000 people expected each day will magnify any disaster unless they're prepared.

So on Thursday morning, around 200 airmen and civilians gathered for a mass casualty drill. The wounds were fake, but the training is powerfully real.

Out of Air Force uniform and made up with fake blood across her face, Sr. Airman Taylor Donnelly said she knows if there's a disaster in the crowd of 100,000 -- her time here, playing a hurt civilian, will help the real civilians.

"We have a great community, we're so lucky to be here. And if something were to happen, we would obviously very much want to take care of them to the best of our ability," Donnelly said.

"They take such great care of us, and we want to give right back to them."

Thursday's scenario: a helicopter goes down in the heart of the air show after being clipped by a jet that then crashes just outside the base.

Who goes where? Do we have the supplies? Can we handle the pressure?

Those are the questions instructors hoped to answer by watching carefully as a crowd of simulated victims was sorted and treated by medics inside an enormous airplane hangar.

"This is a great opportunity to bring in our local partners that support us in emergency management, police response, get them all on the same sheet of music and make sure we're well-coordinated," said MacDill's commander, Col. Scott DeThomas.

MacDill does much more than this drill to be ready.

During AirFest, they'll have two command centers on standby, 700 security forces fanned out across the base, and police and fire departments from across Tampa Bay able to send in more help, just in case.

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