Hello. You did not present the text to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
Special agents are encouraged to use a cyanide pill, if caught, so that it is impossible for them to reveal secret and crucial information about the institution for which they work. This is because, cyanide is a highly toxic agent for humans, and can cause death in a few minutes, if ingested. In that case, special agents place a cyanide pill inside the mouth, to chew quickly if caught. This causes them to die and prevents them from revealing important things if they are questioned. Therefore, to answer your question, you should look for this type of information in your text.
