Dallas firefighters complained Monday about a delay in police emergency response over the weekend that left firefighters to deal on their own with a knife wielding suspect. “It was one of those runs where you think it’s going to be the last run you ever make,” said Dallas Firefighters Union President Jim McDade. It happened Saturday around 11:45 p.m. when firefighters from Station 56 on Beltline Road responded to the Prestonwood Hillcrest Apartments on La Cosa Drive. McDade said firefighters received a mental health call for a man who had been threatening to light fires and menacing his ex-spouse. “She waved them in and the guy came out from behind bushes with a knife in his hand,” McDade said. The firefighters called for police back up and when no officers responded, they retreated to the fire truck for safety. Fire Department radio traffic recorded the exchange between the crew and the dispatcher.