Security has been a big concern during the pandemic. The danger is not violent persons but infected individuals who may disrupt businesses and spread the disease among the vulnerable. Guards had to reimagine their roles from checking for weapons to checking for symptoms.
Security guards for screening Covid-19 have been deployed all across cities, usually at offices and business establishments that have remained open because they provide essential goods or services. They man the entrances to ensure that only authorized persons get inside. They see to it that everyone is following health protocols.
They monitor the situation on the ground and act quickly if their intervention is needed. For example, they remind people to adhere to social distancing while falling in line and they escort aggressive persons outside of establishments. They de-escalate as much as they can to reduce stress for everyone.