Malls expected to assess security arrangements in wake of Thursday shooting . Gunman at Nebraska , Omaha , mall killed 10 people and himself . He said malls would be considering whether to close some entrances , bring in additional officers , and make security more visible . Some security experts say such incidents are impossible to anticipate . Study by CNN says training drills for mall guards are inadequate .
Malls expected to assess security arrangements in wake of Thursday shooting . Gunman at Nebraska , Omaha , mall killed 10 people and himself . Some security experts say such incidents are impossible to anticipate . Study by CNN says training drills for mall guards are inadequate .