Static guarding is when a security officer is based on a site or property. These officers are highly trained, as they often work alone and must make quick, informed decisions in response to occurrences on site. The type of static guard provided depends on the requirements of the client. Some provide a visual presence, patrol in security uniforms and are on site 24 hours a day. Others work in reception areas, checking in visitors, answering phones and keeping a low-profile, while ensuring that the building remains safe and secure during office hours. Some clients will require more than one officer to be on site at all times.