That new helpful “what to do if a crazed gunman starts shooting up your workplace” video posted last week by Houston’s Office of Public Safety and Homeland Security features the city’s new Washington Ave Permitting Center in a starring role, along with a cast of cleaned-up would-be plan checkers and health officials — and a bald, cold-blooded shooter wearing dark glasses and toting a menacing backpack. The gunman starts by offing a security guard and a bystander at the lobby elevators behind the receptionist’s desk, then works his way into various city departments. The video was completed 2 weeks before the recent well-publicized attack on theatergoers in Aurora, Colorado, where 12 people were killed and 58 injured. DHS’s advice for permit officers or anyone stuck in an office that finds itself suddenly transformed into a scene out of an action movie: Run. If you can’t run, hide. And if you can’t hide, fight. Here’s the scene: