Harry nodded, not overly surprised. "Do you need something for the head ache?" he asked, leaning on his elbows as he looked at his son.
"An attack by Voldemort would be extremely frightening, but we can't rely on your fear doing your protecting for you. Do you think you could bring back the feeling - not now" he added. "But in another situation? Do you think you can recreate what happens with the panic and fear?"