In some instances this is called due diligence. There are a number of high profile events this summer. There are concerns in this nation about acts of terrorism. If there were to be a tragic event of this sort people would be decrying LTD for not being vigilant. My reading of this article says that LTD is being mindful and watchful of unusual activity. That is to be expected of a publicly funded agency in this day and age. Unfortunate as that is.