What should be the first action when implementing a "protect in place" strategy?

The first action when implementing a "protect in place" strategy is to stay inside the building. This approach is designed to keep individuals safe from an external threat by remaining indoors rather than attempting to evacuate. Staying inside can provide a layer of security from potential dangers outside, allowing individuals to assess the situation without exposing themselves to risks such as armed threats or hazardous conditions.

Additionally, staying put enables those inside to follow further instructions from authorities, monitor the situation via communication channels, and prepare for any necessary additional measures, such as sealing windows and doors for further protection. Evacuation may not be the safest option in certain emergencies; thus, the focus shifts to ensuring safety while minimizing exposure. This emphasizes the importance of being aware of one's surroundings and understanding the appropriate response based on the nature of the threat.