 The Apollo Command / Service Module was much bigger and far more complex than any previously implemented spacecraft design . In October 1963 , Joseph F. Shea was named Apollo Spacecraft Program Office ( ASPO ) manager , responsible for managing the design and construction of both the CSM and the LM . In a spacecraft review meeting held with Shea on August 19 , 1966 ( a week before delivery ) , the crew expressed concern about the amount of flammable material ( mainly nylon netting and Velcro ) in the cabin , which both astronauts and technicians found convenient for holding tools and equipment in place . Though Shea gave the spacecraft a passing grade , after the meeting they gave him a crew portrait they had posed with heads bowed and hands clasped in prayer , with the inscription : 
