For instance, specialists are sometimes jokingly referred to as "The E-4 Mafia", "Command Private Major", "Specialist Major", "Full-Bird Private" (from the eagle on their shield), "Sham shield" (from their stereotype of "shamming it", or malingering), "PV4", or "Spec-4" (in reference to the old specialist grades, which at one point went up to Specialist 9).