After word of the shooting at a Colorado theater early Friday morning that left 12 dead and dozens of others injured, theaters across the country have received numerous phone calls from concerned parents and citizens on their procedures.

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Kevin Morgan, manager of the Portage 16 IMAX in Northwest Indiana, says they already have security measures in place. "We have a 68 camera system that's constantly running, keeping an eye on things and giving us the opportunity to see around those corners we can't always see. We also use off duty police officers as our security, every weekend. We've been doing that since we first opened. We've spoken a few times today with the police chief, just checking on things and making sure we have what we need for the weekend...make sure that we have plenty of staff and of course they're aware of anytime we have a big movie opening"

When it comes to wearing costumes at the show, which has become a big to-do with big film releases, Morgan asks moviegoers to be respectful. "A lot of people can still wear their t-shirts and capes and so forth, but we are asking them to take their masks off. That's really the concern at this point."

AMC Theaters announced Friday they're increasing security at all theaters across the country. The movie theater chain says no costumes, masks or even fake weapons will be allowed.