Ok so I have this friend that lives on base in Cheyenne, WY. Every time she is alone mysterious things happen. She hears someone walking upstairs, she has two dogs and one mysterically keeps having his collar taken off him then one morning she found him out of his cage with his collar off and somehow locked the other dog back into their kennel. She has her brother and wife go upstairs where she kept hearing all the walking and creeking and both said that when they went up there by themselves they felt a presence behind them and when they turned around no one was there? What should I do? Could this be a ghost or spirit? Again this only happens when she is alone