Wow, awesome ones there. Sarah, it seems like kids and animals have the highest sensitivity to these things; they must have felt the negative energy.
Alex, that is creepy! reminds me of a time my Mom was on the computer and I was in the doorway just finishing talking to her; we both saw out of the corners of our eyes, this shape, like a small kid or a dog, rush past between us in the doorway and then it was gone..