A police officer was shot Monday in what began as a traffic stop but spiralled within seconds into a foot chase, a carjacking and a broad-daylight gun battle in a Calgary park. Darren Smith confirmed the chase at one point saw the suspect and police firing at each other with bystanders close by in Edworthy Park, west of downtown. “(Officers) were yelling at bystanders to get behind vehicles, telling others to run,” Smith told a news conference at the park. “I heard pop, pop and then pop, pop, pop and I thought, ‘hmm, sounds like firecrackers,'” he said. After that, a police helicopter began circling and Deakin realized those sounds likely weren’t just firecrackers.