How you like the security detail on the inside? It’s like entering an airport terminal isn’t it.
Yes, the security immediately as you enter the building is pretty tough... you have to empty your pockets and go through the metal detector. As I understand it, this gunman had a rifle (not a pistol) and basically the shootings/rampage took place directly outside the building and in the parking lot. So, none of this really seems like a security flaw.
Additionally, so many of us here in Texas have a gun pretty handy, so there’s a limit to how long these things can go on before somebody steps in and puts a stop to it. Although I left the parking lot about an hour before things began, I certainly had a loaded revolver there in my car myself, and would have immediately grabbed it and tried to take the guy out.