What is the first step in responding to a reported explosive device?

Establishing a safe perimeter and assessing the situation is the foundational step in responding to a reported explosive device because it prioritizes safety for both responders and the public. The immediate response must focus on ensuring that individuals are kept at a safe distance from potential danger. This step allows the EOD team to evaluate the specifics of the situation, such as the type of explosive device, its location, and any immediate threats to life or property.

By securing the area, responders can accurately assess the situation without being hindered by onlookers or other emergencies that may arise. This capability is critical for a successful operation as it informs all subsequent actions, including risk mitigation and engagement with the device. Conducting a public safety announcement, engaging the device right away, or waiting for further instructions could lead to unnecessary risks or delays that compromise safety and effectiveness in managing the potentially hazardous situation.