Smoke shop owner defends himself Surveillance video inside a vape shop in Las Vegas shows an owner defending himself with a knife from would be robbers. On Aug. 3, Johnny Nguyen, 22, was captured on film stabbing one Surveillance video inside a vape shop in Las Vegas shows an owner defending himself with a knife from would be robbers. On Aug. 3, Johnny Nguyen, 22, was captured on film stabbing one Video captures Las Vegas vape shop owner stopping day time robbery by stabbing would be thief NextShark.com Best Vape shop in Mississauga And Vancouver Vape It Off Exclusive Las Vegas vape store owner defends himself by stabbing would be robber