South Yorkshire Police say their Project Servator officers are gearing up for Remembrance Day events across South Yorkshire this weekend.
As part of preparations for Remembrance Sunday, Project Servator officers deployed to the city centre around the Town Hall and Barker's Pool earlier this week, the force says. The deployments are highly visible but also use other tactics such as plain clothes officers and closely monitored live CCTV cameras.
Police say the difference between Project Servator and other police deployments is that officers are specially trained to spot the tell-tale signs that someone may be carrying out hostile reconnaissance — the process adopted by some people who may be planning or preparing to commit a criminal act.
The force says the public also have a vital role to play. If you are out and about and see something that doesn't seem right or concerns you, report it to a police officer, a member of security or staff, or by calling 101. In an emergency, always dial 999.