article_snippet.sent: Crowds were seen running around Universal Studios in Hollywood, California, not long after the shooting .
article_snippet.sent: Eddie Hernandez told NBC.
article_snippet.sent: Universal Studios has an official policy banning all weapons from Universal Studios grounds, and searches guests before guests enter.
article_snippet.sent: A parks spokesman told NBC Southern California: 'The safety and security of our guests is always of utmost importance.
article_snippet.sent: Business remains open.'