The slide tipped over during Wyandanch School District's field day at the town park on Mount Avenue at about 9:45 a.m. Surveillance video shows the scary moment the slide fell over while children were on it.
Jayson Armstrong, a 7-year-old second-grader, was one of 14 students on the slide.
"They told us to get out and told us to sit down," Armstrong said. "There were too much people."
At least one child was brought to the hospital for a broken leg and others were treated for minor injuries, officials said.
"Eleven people were treated here by a field physician from Suffolk County Fire Rescue and then we had seven people that transported," said Paul Miller, Suffolk County Fire Rescue deputy coordinator.
Nia Brown and her family saw the whole incident unfold.
"It tilted to the side and then it fell," she said.
"A lot of kids — too many kids, no one was watching it," said her dad, Lamont.
The Brown family isn't the only one asking questions. One parent thought the inflatables weren't staked.
But Jaequan White with Jump Around Party Rentals, the company that supplied the inflatables, said they were properly staked and sandbagged. However, he said someone should've been supervising. He said the school district declined to use the company's attendants.
"They said they had teachers attend their event," White said.
In a statement, Wyandanch School District officials said their priorities are the health and well-being of any injured students and those who attended the event. They've already initiated a throw investigation, including working with the company that provided the inflatables, to figure out the cause of the situation.
SkyFox was over the scene shortly after the accident where several inflatable structures appeared to have been set up in the tennis court area but were deflated.