The problem, Hale says, is that the whole of a SCIF is less secure than the sum of its parts. The requirements for making a site secure are elaborate; the unclassified version of the technical specifications runs at 158 pages. Acoustic insulation standards cover all sides of the room, including the floor and ceiling. Despite these standards for individual sections, the door and frame systems often don't seal as well as intended, letting noise escape, Hale says. He suggests the flaws arise when contractors neglect specific design details during construction. As a result, SCIFs are no more soundproof than a typical California apartment, according to Hale, who presented his findings yesterday at a meeting of the Acoustical Society of America.