What is a secondary explosive device designed to do?

A secondary explosive device is specifically designed to detonate after the initial explosion of a primary device. The purpose of this design is often to cause additional harm to responders or bystanders who may rush in to assist or investigate the scene of the first explosion. This tactic of using secondary explosives is commonly employed in terrorism and military operations to maximize casualties and chaos, leveraging the response to the primary incident.

Understanding the role of secondary devices is crucial for law enforcement and emergency personnel as it highlights the ongoing threat even after an initial explosion, and emphasizes the need for caution when approaching potentially dangerous situations. The other options indicate different functions that do not align with the primary intent of secondary explosives, reinforcing the significance of recognizing their intended purpose in threat assessments.