What is the correct cordon distance for a briefcase-sized item?

When dealing with an item like a briefcase, it is essential to establish a safe cordon distance to ensure the safety of the public and responding officers, especially in situations where the item may be suspicious. Setting a cordon at 100 meters is considered standard practice in these scenarios. This distance allows for effective crowd control while minimizing potential risks associated with explosive or hazardous materials that could be contained within the item.

In comparison to larger or more hazardous items, such as vehicles or larger packages, which would necessitate a greater distance for safety, the 100-meter cordon for a briefcase-sized item strikes a balance between safety and practicality. The other options represent distances that are typically reserved for more significant threats. Therefore, the selection of 100 meters as the appropriate distance reflects established protocols aimed at ensuring both public safety and effective operational response.