I remember one time my wife thought someone was in the backyard. She was in the bedroom when she said someone walked right up to one of the windows. We've got granite over most of the yard, so it's pretty easy to hear. I grabbed the nearest gun and cleared the yard. When I came back in, she was still standing in the exact same spot where she told me she thought someone was in the yard. After she calmed down, I had a talk with her about getting the phone, something to use as a weapon, etc, rather than just standing there.