What should trained responders look for before entering a post-blast site?

Trained responders need to prioritize their safety and assess the environment before entering a post-blast site. Looking for glass and concrete fragments is critical, as these materials can pose significant hazards. The debris might still be shifting or unstable, risking injury to responders. Assessing the presence of sharp objects like glass and heavy concrete fragments helps responders gauge the risk of physical injury and informs them on the type and level of protective gear needed before proceeding.

In contrast, large crowds, first aid kits, and media personnel can indicate ongoing chaos and the potential for other hazards but do not directly pertain to the immediate physical safety and structural integrity concerns that responders must evaluate first at a blast site. Understanding the physical landscape of the area in terms of debris and hazards is essential for ensuring a safe and effective response.