The Thin Blue Line Between Success and Failure

A computer terminal cannot know everything that beat cops understand through their senses and their shoe-leather.

What would have happened if the security cameras at the Bank Hapoalim branch in Be'er Sheva were connected to a city-wide network that, during an emergency - like the one on Monday, when a gunman shot and killed four people at the branch - would come under police control, so the entire scene could be seen by the commanders planning their intervention?