(IDEX Online) - A masked raider calmly removed a gun from his bag and fired five shots at workers in a booth selling jewelry at a swap meet in Utah, USA.He then used a hammer to smash open glass display cabinets and steal what police describe as a "large quantity" of merchandise.One employee was grazed by a bullet but did not require medical treatment, said West Valley City Police in a statement after the attack at Salt Lake's Indoor Swap Meet.They've to apprehend the man, who wore all black clothing, sunglasses, and covered his face with an American flag bandana.The Jewelers' Security Alliance is urging anyone with information to contact jsa2@jewelerssecurity.orgVideo grab shows the man firing at workers.