How do "safety behaviors" contribute to the persistence of panic disorder?

What will be an ideal response?

Panic disorder often persists despite infrequent panic attacks and no occurrence of dire consequences as a result of a panic attack. This may be explained by the use of "safety behaviors," behaviors that the individual engages in before or during an attack. When nothing catastrophic occurs, it is attributed to the use of the safety behaviors, as opposed to the lack of any real danger.