Having worked in this field, I have noticed that when large companies have issues with their security people, it is almost always an issue with contract employe

Having worked in this field, I have noticed that when large companies have issues with their security people, it is almost always an issue with contract employees and noone from the company managing the situation close enough. There is also an added layer when you have contractors, sometimes miscommunication happens, sometimes it devolves into coverups. When you employ the security guard directly you also can avoid attrition detracting from the familiarity the guards have with the property and procedures. They will also have more invested in making sure things go well for the company. In these sort of transitions, often the existing contractor will work with the client to ensure a good transition so that they can maintain relations. In some cases they also will continue to hire guards who transition to FTEs after a period (temp-to-hire). The reason that it does not happen that often is that the industry is used to contracting out for these employees and long introspective studies of physical security are expensive and often embarrassing.