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 AV vapes , #vape #victoria #victoriabc #yyj #smoke downtown Exclusive Las Vegas vape store owner defends himself by stabbing would be robber