Retirement ceremony in honor of Edward K. Rishel, chemist at the Naval Air Engineering Center's Aeromaterials Laboratory. Rishel (center left) holds a certificate reading "Honorably Retired as a Civilian Employee of the U.S. Naval Air Development Center." The individuals in the photograph are identified as follows (from left): Charles A. Cassola (Head, High Polymer Division); Edward K. Rishel (Chemist, retiring); CDR Robert L. Abbott (Laboratory Director); and J. Hartley Bowen, Jr. (Technical Director).