More than 70 firefighters and a water-dropping helicopter fought a 10-acre brush fire Monday at Featherly Regional Park near Yorba Linda, an Orange County Fire Authority spokesman said.
The cause of the fire, which broke out in sweltering heat at 2:42 p.m., is under investigation, said Garry Layman, a Fire Authority spokesman. No homes or structures were threatened, he said. Three firefighters were treated for heat exhaustion.
