It's spring in Detroit—warm weather, a few clouds, and a 100% chance of marshmallow downpours.

The source? A helicopter zooming above the green lawn of Worden Park, unloading sackfuls of fluffy treats for hundreds of kids waiting eagerly below, some clutching colorful baskets or wearing rabbit ears.

The children cheered and pointed as the helicopter clattered by on its way to the drop zone. Volunteers in yellow vests made sure kids didn't rush in and start grabbing marshmallows until after the deluge was complete.

For anyone worried about hygiene, don't fret. The annual Great Marshmallow Drop isn't about eating the marshmallows—kids could exchange them for a prize bag that included a water park pass and a kite.

The Great Marshmallow Drop has been held for over three decades in the Detroit suburb of Royal Oak, Michigan, hosted by Oakland County Parks.

One toddler, Georgia Mason, had no difficulty procuring a marshmallow at her first drop, her dad Matt said.

“Probably the most exciting part was seeing the helicopters. But once we saw the marshmallows drop, we got really excited,” Matt Mason said.

“And, yeah, we joined the melee,” he said, “We managed to get one pretty easy.”

Organizers said 15,000 marshmallows were dropped in all.

The helicopter made four passes, dropping marshmallows for kids in three age categories: 4-year-olds and younger, 5-7-year-olds, and those ages 8 to 12. A drop for kids of all ages with disabilities came later in the day.

“We do it because it’s great for community engagement,” Oakland County recreation program supervisor Melissa Nawrocki said.

“The kids love it,” she continued. “The looks on their faces as they’re picking up their marshmallow and turning in the marshmallow for prizes is great.”

This article was provided by The Associated Press.