This poster, pocket card, and booklet provide some suggested responses to an active shooter situation. These documents were produced by the U.S. Department of Homeland Security (DHS) for businesses and citizens.
Active Shooter Poster
Active Shooter Pocket Card
Active Shooter Booklet
Active Shooter Poster - Spanish
Active Shooter Pocket Card - Spanish
DHS also have an active shooter training video called Options of Consideration that you can view on their website by following this link.