In the seconds after a Mountie sped past a gunman wanted for a murderous rampage in Nova Scotia two years ago, the officer hesitated about whether to give chase, and by the time he did the suspect was gone. Public inquiry documents released Thursday describe in detail for the first time an encounter between Cpl. Rodney Peterson and the killer on April 19, 2020. The two men—one a real Mountie and the other an impostor in a police uniform driving a replica RCMP vehicle—passed in opposite directions just before 9:48 a.m. on Highway 4 in the community of Glenholme. Peterson radioed to other RCMP members that the driver was wearing a reflective vest and “smiled as he went by,” prompting another officer to say, “That’s him. That’s got to be him.” The corporal had come on shift that morning with instructions to look out for a patrol car and to …