What should be your immediate reaction upon receiving the command to spray?

The immediate reaction upon receiving the command to spray should be to stop breathing. This is crucial in a situation where chemical agents may be deployed, as inhaling these substances can have severe and even fatal consequences. By holding your breath, you minimize the risk of inhaling harmful agents during the initial exposure. This physical response gives individuals a critical moment to secure their gas mask and begin the proper procedures to protect themselves from contamination.

Wearing a gas mask is equally vital, but it is a step that follows immediately after the command to spray; stopping breathing is the immediate action to mitigate inhalation of potentially dangerous substances.