Answer
The pilot should expect that temporary security restrictions or notices may affect the area and should check current official sources for the actual time of flight. If a restriction applies, the flight should not proceed without the required authorization.
Explanation
Temporary restrictions are not limited to fires or airports. VIP movement, national security activity, disasters, and major public events can change the airspace quickly. A professional pilot treats late breaking activity as a reason to re check, not as background news.