There are four individuals in the image. They are wearing orange vests with reflective stripes, which suggests they might be involved in safety or security activities. The vests have the number "90" on them, indicating they could be part of a specific team or group. One person is holding what appears to be a tool or equipment, while the others are standing around, possibly discussing or waiting for their turn. The overall scene suggests a coordinated effort, likely related to maintenance or inspection.