A Gainesville Police officer administered the opiate antidote NARCAN Thursday night to an unconscious man, preventing an accidental overdose, police said. Officers responded around 8 p.m. Thursday to a house on Norton Drive in Gainesville, where a caller said he found “his roommate unconscious and not breathing,” Sgt. Kevin Holbrook wrote in a news release. “One officer began chest compressions while another hooked the victim to an (automated external defibrillator),” Holbrook wrote.