I captured the SLS image posted below inside a building called the Elkhorn Tavern. It's a recreation of the original tavern that was there during the Civil War battles in the area. I walked inside this building and turned on my SLS camera, my EMF meter and my Spirit Box. A Park Ranger was there when I arrived at the building, and he wasn't a nice person. In fact, he was rather rude to me.
He looked at my equipment and scoffed at me as I walked by him. I smiled at him and proceeded with my investigation. He was watching me as I walked through the building with my equipment. He barely said two words to me the entire time I was in the building until I was walking to the door to leave, but then he looked at me and said, "I've been coming here since I was a boy, and I haven't seen or heard anything! I was a teacher, and I'm a historian, and I deal in facts!" I remained calm during his angry rant, and I politely asked him if he'd like to see the evidence I collected while I've been in the building. He smirked at me and said sure.
I decided to turn up the volume on my Spirit Box, so he could hear the spirits in the building, and then I showed him this SLS image. I explained to him how my SLS camera works, and after I had finished explaining it to him, he stood still and looked at the picture for a few seconds. His only response to seeing the SLS image of a spirit was, "Huh!" He didn't say anything else in response, he just turned around and walked outside. I walked around outside the building for the next 45 minutes, and he didn't say a word to me.