Final answer:
Post orders or standing orders are generally present at every site with a security guard, providing necessary instructions and protocols for handling duties and situations.
Step-by-step explanation:
Post orders or standing orders are indeed typically found at every site where a security guard is stationed. These detailed documents are important as they provide guards with instructions on their duties, protocols for handling various situations, and the policies specific to the site they're guarding. These orders are designed to guide the actions of security personnel in both routine activities and emergency situations, ensuring they respond in a manner that's consistent with the expectations of their employer and the needs of the client.