City of Houston, TX. Following the July 21, 2012, mass casualty shooting in Aurora, Colorado, the City of Houston has released an instructional video on what to do in case of a similar emergency. Funded by the Department of Homeland Security, the city hopes that the video can help people prepare people for the worst. Entitled Run. Hide. Fight. Surviving an Active Shooter Event, it depicts a fictional shooting incident in a crowded office building.