In Cameron v. Lang, 274 Ga. 122, 123 (1), 126 (3) (549 SE2d 341) (2001), our Supreme Court found that initiating a high speed chase against persons suspected of car theft was a discretionary act, noting that it had "previously held that a law enforcement officer exercises discretion in responding to an emergency call, entrusting a car to a jail inmate, executing a search warrant, and firing a gun at a suspect." Id. at 125 (2).