2. You will notice that specific topics appear in the news periodically, but predictably. For example, you can predict that approximately once a year the topic of alcoholism will emerge. It might be a news event on its cause, a new drug to fight cravings, a story about the genetic brain, or some other related topic. Many other topics related to social problems also will appear in the media. Pay attention.
3. If it is national news, you will have extra time to respond because it will take longer for local stations to run "local expert" interviews. National news filters down to local significance to what is relevant in the immediate community. Again, if it is local news, your window of opportunity is much smaller, possibly an hour or less.
Note: Everything I discussed above, I have also done numerous times.