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 Exclusive Las Vegas vape store owner defends himself by stabbing would be robber 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 Boy, 16, charged for stabbing at Foss High School that injured 4 students, security guard Smoke shop owner defends himself AV vapes , #vape #victoria #victoriabc #yyj #smoke downtown