A child was hospitalized after being hit by one of several drones that crashed into each other during a Saturday night aerial holiday show in Orlando.

A 7-year-old child was struck by a drone that malfunctioned and crashed with several other drones during an aerial show in Orlando, Florida on Saturday night.

The boy underwent hours of open-heart surgery Sunday after the drone struck his chest with such force that it damaged one of his heart valves, Edgerton said. “The blade cut his mouth, but there’s an actual imprint of the drone on his chest,” she said.