nicole wall lale wallace, t. for all the folks tuning in, we must explain that our attention is focused on the youtube corporate campus san bruno, california just south of san francisco. and that is because if you have been following any of our coverage, you know already this is the latest scene in this country of the new term the art, the active shooter, this is not a drill, sadly law enforcement mass converged on the youtube campus because of reports of shots fired. there are a few things to point out as we watch what is now going to be this familiar endless loop of aerial photograp photography. most of it like what you are looking at now live, but a lot of it will be taped from earlier when the helicopter first arrived at the location. we have seen a notable absence