For a high-risk client Protective Surveillance, it is imperative a security team is pro-active and not reactive. Too many times history has shown that systems are put into operation too late. When it comes to high-risk clients, protective surveillance must only be used in conjunction with a close protection team. The two teams though separate, are symbiotic. They work hand in hand towards the shared goal of keeping the client safe and secure. A PST on its own would likely be able to identify certain threats at an early stage and act accordingly. However, they would rarely be close enough to protect the client from an impromptu attack, or act as a last line of defense. They are also not an overt presence that acts as a visual deterrent to potential threats. This is why the two teams work perfectly together, each with a different scope of work, yet entirely interlinked.