Three Dallas Fire-Rescue firefighters trapped in a burning condo while battling a massive fire Tuesday morning were treated for minor injuries after being rescued by an intervention team, fire officials say. The firefighters were among more than 100 called to battle a large four-alarm fire at about 9:30 a.m. at a three-story building in the Cambridge Park Condominiums, in the 11400 block of Audelia Road, in Dallas' Lake Highlands neighborhood. At some point during the fire, a mayday call was received from three firefighters trapped in the burning building. "They were inside of a second floor unit possibly conducting a search of some kind, when the upper floor collapsed in the unit with them," Evans said.