Wellness check at Tustin PD brings to light serious heart condition for now medically retired sergeant


From a picnic table at Concourse Park, located atop a hill in the Portola Hills neighborhood of Lake Forest, Sean Quinn takes in the expansive views of adjacent Whiting Ranch Wilderness Park and, beyond that, the Santa Ana Mountains. For more than three decades, Quinn pounded up and down the trails in these and other outdoor O.C. playgrounds on his mountain bike – one of several physical passions that have kept Quinn in excellent shape since he was a standout defensive back for Tustin High School’s football team. But Quinn, a former sergeant at the Tustin PD, hasn’t been on…

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