Security at movie theaters nation wide after Colorado shooting

Are they actually arming security staff with AR-15's? I haven't heard much about the shooting, all I know is that the guy is a nutjob.

im sure a a few huge mega plexes they might.but mainly there are just cops stationed at em for the busy hours.there is a really small 4 theater cinema down the street from me, my sister works at.and the had a officer stop in and the theater check.