The mark consists of a helmet wearing a multi-pointed hat above a shield with four stars. The shield is surrounded by a decorative leaf-like or vine-like background. The shield is separated into three segments. The top left segment contains the design of a cornucopia. The top right segment contains the design of a ship with square sails. The bottom segment contains a skull wearing a multi-pointed hat and a background design of leaves, triangles, hearts and a bow. The literal element of the collective membership mark comprises the Greek letters delta, sigma, pi, nu, alpha, mu, sigma, iota, omega, pi, eta, pi, alpha, kappa, tau, sigma, iota, and sigma. The Greek letters delta, sigma and pi are embedded in the skull design and transliterate to DSP but do not form a word. Below the shield is a banner with the Greek letters sigma, iota, omega, pi, eta that transliterate to SIOPE and this means silence in English. To the left of SIOPE on the banner are the Greek letters nu, alpha, mu, which transliterate to "NAM" but do not form a word; to the right of SIOPE are the Greek letters pi, alpha, kappa, tau, which transliterate to PAKT but do not form a word; and to the right of PAKT are the Greek letters sigma, iota, sigma, which transliterate to SIS but do not form a word.