My 16 year old son was woken from his sleep by a cold blowing on his face ( he said it felt like a fan being on).when he woke up he saw something black above his bed but was un able to call for me or move he said his eyes were wide open looking up towards the black shadow above him and it wasn't till it went he was able to run into me. He was extremely afraid and won't go back in his bedroom. Any ideas what's going on? All lights were out and no TV was on.