300-mile bike ride after I lost my arm By Miles O’Brien, Special to CNN
Editor's note: Dr. Sanjay Gupta has been following former CNN correspondent Miles O'Brien's recovery after the amputation of O'Brien's left arm. On July 12 and 13, O'Brien is participating in the 300-mile Less Cancer Bike Ride from Port Huron to Mackinac, Michigan. Follow CNN for more on his story. Miles O'Brien (CNN)