my dad recently had a dream in which he was sleeping in a chair and he woke up to a silhouette of a person coming threw the front window, he pulled the blanket off of him and put the chair in the upright position and grabbed his flashlight. when he woke up he had actually done what he dreamt he had done, but there was no one coming threw the window. i am kinda concerned for safety here, was this just a nightmare or is it some type of warning?