Keywords: USS Chicago (SSN 721) Coat of arms.jpg Coat of arms for the USS CHICAGO SSN 721 http //www dodmedia osd mil/Assets/Still/1986/Army/DA-SC-86-04657 JPEG ID DA-SC-86-04657 / Service Depicted Navy Date Shot 24 Mar 1986 USN USS Chicago SSN-721 PD-USGov-Military-Navy |