Josh Burger, an Air Force contractor, and Capt. Stan Maczek, with the 1st Space Operations Squadron, demonstrate the use of an electro-magnetic field detector through the lens of a video camera equipped with an infrared attachment at Schriever Air Force Base, Colo., Jan. 18, 2012. Burger and Maczek use both instruments during their paranormal investigations. (U.S. Air Force photo/Scott Prater)