What are Controlled Firing Areas (CFAs) known for?

Controlled Firing Areas (CFAs) are specifically designed to allow for the safe conduct of activities that could pose hazards to aircraft. When an aircraft approaches or is detected in the vicinity of a CFA, all activities within the area are suspended. This ensures that any live firing or hazardous operations do not pose a risk to overflying aircraft, thereby enhancing safety for both the military and civilian aviation operations.

CFAs are not airspace where all traffic is regulated, nor are they areas with no flying restrictions. They specifically have protocols in place to mitigate risks when the airspace is occupied by aircraft. Additionally, CFAs do not focus on public air demonstrations; rather, they are more concerned with controlled military activities. The key point is that CFAs prioritize safety by suspending dangerous activities when aircraft are nearby, making option A the correct choice.